update report for lab1
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content/courses/prog-intro/homeworks/sum/_index.md
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content/courses/prog-intro/homeworks/sum/_index.md
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---
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title: Sum
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weight: 5
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---
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# Task
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1. You need to create a `Sum` class which will sum integers from command line arguments and output the sum to console.
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2. Examples:
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```sh
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java Sum 1 2 3
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```
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Expected output: `6`.
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```sh
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java Sum 1 2 -3
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```
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Expected output: `0`.
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```sh
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java Sum "1 2 3"
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```
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Expected output: `6`.
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```sh
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java Sum "1 2" " 3"
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```
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Expected output: `6`.
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```sh
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java Sum " "
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```
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Expected output: `0`.
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3. Arguments can be:
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- digits,
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- signes `+` and `-`,
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- [space symbols](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Character.html#isWhitespace(char))
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4. You can assume that `int` type is sufficient for in-between calculations and result.
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5. Before doing the task make sure to read docs for classes [`String`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/String.html) and [`Integer`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Integer.html).
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6. For debugging use [`System.err`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/System.html#err), because it will be ingnored by the testing program.
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---
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# Solution
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After reading about [`String`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/String.html), [`Integer`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Integer.html), [`System.err`](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/System.html#err) we now know about some usefull methods:
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- [`Integer.parseInt(String s, int radix)`](https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#parseInt-java.lang.String-) which parses the string argument as a signed integer in the radix specified by the second argument. So it basically converts a number from the `String` data type to `int`.
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- [`Character.isWhitespace(char ch)`](https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#isWhitespace-char-) which checks if a character `ch` is a space symbol or not.
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Now let's start coding. Firstly let's define the structure of our program. I will be putting the name of the file at the first line comment in a file and its path if its nessesary.
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```java
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// Sum.java
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public class Sum {
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public static void main(String[] args) {
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// ...
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}
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}
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```
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Okay that's done. What do we do next? Let's look at `String[] args` argument to our `main` method. It represents an array of command line arguments which we need to sum. So know we made our task a little bit easier. Now we can just say that we need to find sum of elements of array `args`.
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How are we going to do it though? First let's understand what we can do with this array. Let's modify our class a little bit.
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```java
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// Sum.java
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public class Sum {
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public static void main(String[] args) {
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System.out.println(args.length);
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}
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}
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```
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We've added `System.out.println(args.length)` which takes the field `length` from our `args` object and prints it to the console.
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Let's try it. First compile our class using
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```sh
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$ javac Sum.java
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```
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And then we can do some manual testing.
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```sh
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$ java Sum 1 2 3
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3
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```
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We got `3` as an output as expected. We gave our program 3 command line arguments: `1`, `2` and `3`.
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Here are all of the examples
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```sh
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$ java Sum 1 2 -3
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3
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```
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```sh
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$ java Sum "1 2 3"
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1
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```
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> [!NOTE]
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> Notice, that we got 1 instead of 3. That's because we put our arguments in `""` so this becomes a single string argument.
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```sh
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$ java Sum "1 2" " 3"
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2
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```
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```sh
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$ java Sum " "
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1
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```
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> [!NOTE]
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> Here program gives us 1 instead of 0, because despite not having any numbers in the arguments a single whitespace is still an argument.
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Now let's try not obly to count our arguments but to list them as well. Let's modify our program a little bit more.
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```java
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// Sum.java
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public class Sum {
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public static void main(String[] args) {
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System.out.println("number of arguments: " + args.length);
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for (String argument : args) {
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System.out.println(argument);
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}
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}
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}
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```
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Here I used `for` loop to do printing ***for*** every `String` element in `args`.
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Let's try this with our examples. And don't forget to recompile using `javac Sum.java`.
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```sh
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$ java Sum 1 2 3
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number of arguments: 3
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1
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2
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3
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```
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```sh
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$ java Sum 1 2 -3
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number of arguments: 3
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1
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2
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-3
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```
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```sh
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$ java Sum "1 2 3"
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number of arguments: 1
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1 2 3
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```
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> [!NOTE]
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> Again, notice only ***one*** string argument.
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```sh
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$ java Sum "1 2" " 3"
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number of arguments: 2
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1 2
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3
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```
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```sh
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$ java Sum " "
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number of arguments: 1
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```
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Okay, now that we know how to ***iterate*** (or do something for every element), we can
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@@ -178,8 +178,19 @@
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href="/courses/prog-intro/homeworks/"
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>Homeworks
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<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
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</a>
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<div class="hx:ltr:pr-0 hx:overflow-hidden">
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<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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href="/courses/prog-intro/homeworks/sum/"
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>Sum
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</a>
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</li></ul>
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</div>
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</li><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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@@ -236,8 +247,19 @@
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href="/courses/prog-intro/homeworks/"
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>Homeworks
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<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
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</a>
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<div class="hx:ltr:pr-0 hx:overflow-hidden">
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<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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href="/courses/prog-intro/homeworks/sum/"
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>Sum
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</a>
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</li></ul>
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</div>
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</li><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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@@ -177,9 +177,20 @@
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href="/courses/prog-intro/homeworks/"
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>Homeworks
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<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
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</a>
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<div class="hx:ltr:pr-0 hx:overflow-hidden">
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<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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href="/courses/prog-intro/homeworks/sum/"
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>Sum
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</a>
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</li></ul>
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</div>
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</li><li class="hx:flex hx:flex-col "><a
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class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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@@ -236,8 +247,19 @@
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href="/courses/prog-intro/homeworks/"
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>Homeworks
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<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
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href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
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</a>
|
||||
|
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</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
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||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
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736
public/courses/prog-intro/homeworks/sum/index.html
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736
public/courses/prog-intro/homeworks/sum/index.html
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<!DOCTYPE html>
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<html lang="en" dir="ltr"><head><script src="/livereload.js?mindelay=10&v=2&port=1313&path=livereload" data-no-instant defer></script>
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<meta charset="utf-8" />
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||||
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="robots" content="noindex, nofollow" />
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<link rel="icon shortcut" href="/favicon.ico" sizes="32x32" />
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<link rel="icon" href="/favicon.svg" type="image/svg+xml" id="favicon-svg" />
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||||
<link rel="icon" href="/favicon-16x16.png" type="image/png" sizes="16x16" />
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<link rel="icon" href="/favicon-32x32.png" type="image/png" sizes="32x32" />
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||||
<link rel="apple-touch-icon" href="/apple-touch-icon.png" sizes="180x180" />
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||||
<link fetchpriority="low" href="/site.webmanifest" rel="manifest" />
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<title>Sum – CodeJava</title>
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<meta name="description" content="Task You need to create a Sum class which will sum integers from command line arguments and output the sum to console.
|
||||
Examples:
|
||||
java Sum 1 2 3 Expected output: 6.
|
||||
java Sum 1 2 -3 Expected output: 0." /><link rel="canonical" href="http://localhost:1313/courses/prog-intro/homeworks/sum/" itemprop="url" />
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||||
|
||||
<meta property="og:title" content="Sum">
|
||||
<meta
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||||
property="og:description"
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content="
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||||
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||||
Learn Java programming
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||||
">
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<meta
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||||
property="og:type"
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||||
content="
|
||||
website
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||||
">
|
||||
<meta property="og:url" content="http://localhost:1313/courses/prog-intro/homeworks/sum/">
|
||||
|
||||
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||||
<meta itemprop="name" content="Sum">
|
||||
<meta itemprop="description" content="Task You need to create a Sum class which will sum integers from command line arguments and output the sum to console.
|
||||
Examples:
|
||||
java Sum 1 2 3 Expected output: 6.
|
||||
java Sum 1 2 -3 Expected output: 0.">
|
||||
<meta itemprop="wordCount" content="633">
|
||||
<meta name="twitter:card" content="summary">
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<meta name="twitter:title" content="Sum">
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<meta name="twitter:description" content="Task You need to create a Sum class which will sum integers from command line arguments and output the sum to console.
|
||||
Examples:
|
||||
java Sum 1 2 3 Expected output: 6.
|
||||
java Sum 1 2 -3 Expected output: 0.">
|
||||
<link href="/css/compiled/main.css" rel="stylesheet" />
|
||||
<link href="/css/variables.css" rel="stylesheet" />
|
||||
<link href="/css/custom.css" rel="stylesheet" />
|
||||
|
||||
|
||||
|
||||
|
||||
<script>
|
||||
|
||||
|
||||
function setTheme(theme) {
|
||||
document.documentElement.classList.remove("light", "dark");
|
||||
|
||||
if (theme !== "light" && theme !== "dark") {
|
||||
theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "dark" : "light";
|
||||
}
|
||||
|
||||
document.documentElement.classList.add(theme);
|
||||
document.documentElement.style.colorScheme = theme;
|
||||
}
|
||||
|
||||
setTheme("color-theme" in localStorage ? localStorage.getItem("color-theme") : 'system')
|
||||
|
||||
</script>
|
||||
|
||||
<script>
|
||||
|
||||
|
||||
if (localStorage.getItem('banner-closed')) {
|
||||
document.documentElement.style.setProperty("--hextra-banner-height", "0px");
|
||||
document.documentElement.classList.add("hextra-banner-hidden");
|
||||
}
|
||||
</script>
|
||||
|
||||
|
||||
|
||||
</head>
|
||||
<body><div class="hextra-nav-container hx:sticky hx:top-0 hx:z-20 hx:w-full hx:bg-transparent hx:print:hidden">
|
||||
<div
|
||||
class="hextra-nav-container-blur hx:pointer-events-none hx:absolute hx:z-[-1] hx:h-full hx:w-full hx:bg-white hx:dark:bg-dark hx:shadow-[0_2px_4px_rgba(0,0,0,.02),0_1px_0_rgba(0,0,0,.06)] hx:contrast-more:shadow-[0_0_0_1px_#000] hx:dark:shadow-[0_-1px_0_rgba(255,255,255,.1)_inset] hx:contrast-more:dark:shadow-[0_0_0_1px_#fff]"
|
||||
></div>
|
||||
|
||||
<nav class="hextra-max-navbar-width hx:mx-auto hx:flex hx:items-center hx:justify-end hx:gap-2 hx:h-16 hx:px-6">
|
||||
<a class="hx:flex hx:items-center hx:hover:opacity-75 hx:ltr:mr-auto hx:rtl:ml-auto" href="/">
|
||||
<img class="hx:mr-2 hx:block hx:dark:hidden" src="/images/logo.svg" alt="Logo" height="20" width="20" />
|
||||
<img class="hx:mr-2 hx:hidden hx:dark:block" src="/images/logo.svg" alt="Dark Logo" height="20" width="20" />
|
||||
<span class="hx:mr-2 hx:font-extrabold hx:inline hx:select-none" title="CodeJava">CodeJava</span>
|
||||
</a>
|
||||
<a
|
||||
title=""
|
||||
href="/courses"
|
||||
|
||||
class="hx:text-sm hx:contrast-more:text-gray-700 hx:contrast-more:dark:text-gray-100 hx:relative hx:-ml-2 hx:hidden hx:whitespace-nowrap hx:p-2 hx:md:inline-flex hx:items-center hx:gap-1 hx:font-medium"
|
||||
><span class="hx:text-center">Courses</span>
|
||||
</a><div class="hextra-search-wrapper hx:relative hx:md:w-64">
|
||||
<div class="hx:relative hx:flex hx:items-center hx:text-gray-900 hx:contrast-more:text-gray-800 hx:dark:text-gray-300 hx:contrast-more:dark:text-gray-300">
|
||||
<input
|
||||
placeholder="Search..."
|
||||
class="hextra-search-input hx:focus:hextra-focus hx:block hx:w-full hx:appearance-none hx:rounded-lg hx:px-3 hx:py-2 hx:transition-colors hx:text-base hx:leading-tight hx:md:text-sm hx:bg-black/[.05] hx:dark:bg-gray-50/10 hx:focus:bg-white hx:dark:focus:bg-dark hx:placeholder:text-gray-500 hx:dark:placeholder:text-gray-400 hx:contrast-more:border hx:contrast-more:border-current"
|
||||
type="search"
|
||||
value=""
|
||||
spellcheck="false"
|
||||
/>
|
||||
<kbd
|
||||
class="hx:absolute hx:my-1.5 hx:select-none hx:ltr:right-1.5 hx:rtl:left-1.5 hx:h-5 hx:rounded-sm hx:bg-white hx:px-1.5 hx:font-mono hx:text-[10px] hx:font-medium hx:text-gray-500 hx:border hx:border-gray-200 hx:dark:border-gray-100/20 hx:dark:bg-dark/50 hx:contrast-more:border-current hx:contrast-more:text-current hx:contrast-more:dark:border-current hx:items-center hx:gap-1 hx:transition-opacity hx:pointer-events-none hx:hidden hx:sm:flex"
|
||||
>
|
||||
CTRL K
|
||||
</kbd>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<ul
|
||||
class="hextra-search-results hextra-scrollbar hx:hidden hx:border hx:border-gray-200 hx:bg-white hx:text-gray-100 hx:dark:border-neutral-800 hx:dark:bg-neutral-900 hx:absolute hx:top-full hx:z-20 hx:mt-2 hx:overflow-auto hx:overscroll-contain hx:rounded-xl hx:py-2.5 hx:shadow-xl hx:max-h-[min(calc(50vh-11rem-env(safe-area-inset-bottom)),400px)] hx:md:max-h-[min(calc(100vh-5rem-env(safe-area-inset-bottom)),400px)] hx:inset-x-0 hx:ltr:md:left-auto hx:rtl:md:right-auto hx:contrast-more:border hx:contrast-more:border-gray-900 hx:contrast-more:dark:border-gray-50 hx:w-screen hx:min-h-[100px] hx:max-w-[min(calc(100vw-2rem),calc(100%+20rem))]"
|
||||
style="transition: max-height 0.2s ease 0s;"
|
||||
></ul>
|
||||
</div>
|
||||
</div>
|
||||
<button type="button" aria-label="Menu" class="hextra-hamburger-menu hx:cursor-pointer hx:-mr-2 hx:rounded-sm hx:p-2 hx:active:bg-gray-400/20 hx:md:hidden"><svg height=24 fill="none" viewBox="0 0 24 24" stroke="currentColor"><g><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 8H20"></path></g><g><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16H20"></path></g></svg></button>
|
||||
</nav>
|
||||
</div>
|
||||
|
||||
<div class='hx:mx-auto hx:flex hextra-max-page-width'>
|
||||
<aside class="hextra-sidebar-container hx:flex hx:flex-col hx:print:hidden hx:md:top-16 hx:md:shrink-0 hx:md:w-64 hx:md:self-start hx:max-md:[transform:translate3d(0,-100%,0)] hx:md:sticky">
|
||||
|
||||
<div class="hx:px-4 hx:pt-4 hx:md:hidden">
|
||||
<div class="hextra-search-wrapper hx:relative hx:md:w-64">
|
||||
<div class="hx:relative hx:flex hx:items-center hx:text-gray-900 hx:contrast-more:text-gray-800 hx:dark:text-gray-300 hx:contrast-more:dark:text-gray-300">
|
||||
<input
|
||||
placeholder="Search..."
|
||||
class="hextra-search-input hx:focus:hextra-focus hx:block hx:w-full hx:appearance-none hx:rounded-lg hx:px-3 hx:py-2 hx:transition-colors hx:text-base hx:leading-tight hx:md:text-sm hx:bg-black/[.05] hx:dark:bg-gray-50/10 hx:focus:bg-white hx:dark:focus:bg-dark hx:placeholder:text-gray-500 hx:dark:placeholder:text-gray-400 hx:contrast-more:border hx:contrast-more:border-current"
|
||||
type="search"
|
||||
value=""
|
||||
spellcheck="false"
|
||||
/>
|
||||
<kbd
|
||||
class="hx:absolute hx:my-1.5 hx:select-none hx:ltr:right-1.5 hx:rtl:left-1.5 hx:h-5 hx:rounded-sm hx:bg-white hx:px-1.5 hx:font-mono hx:text-[10px] hx:font-medium hx:text-gray-500 hx:border hx:border-gray-200 hx:dark:border-gray-100/20 hx:dark:bg-dark/50 hx:contrast-more:border-current hx:contrast-more:text-current hx:contrast-more:dark:border-current hx:items-center hx:gap-1 hx:transition-opacity hx:pointer-events-none hx:hidden hx:sm:flex"
|
||||
>
|
||||
CTRL K
|
||||
</kbd>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<ul
|
||||
class="hextra-search-results hextra-scrollbar hx:hidden hx:border hx:border-gray-200 hx:bg-white hx:text-gray-100 hx:dark:border-neutral-800 hx:dark:bg-neutral-900 hx:absolute hx:top-full hx:z-20 hx:mt-2 hx:overflow-auto hx:overscroll-contain hx:rounded-xl hx:py-2.5 hx:shadow-xl hx:max-h-[min(calc(50vh-11rem-env(safe-area-inset-bottom)),400px)] hx:md:max-h-[min(calc(100vh-5rem-env(safe-area-inset-bottom)),400px)] hx:inset-x-0 hx:ltr:md:left-auto hx:rtl:md:right-auto hx:contrast-more:border hx:contrast-more:border-gray-900 hx:contrast-more:dark:border-gray-50 hx:w-screen hx:min-h-[100px] hx:max-w-[min(calc(100vw-2rem),calc(100%+20rem))]"
|
||||
style="transition: max-height 0.2s ease 0s;"
|
||||
></ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
<div class="hextra-scrollbar hx:overflow-y-auto hx:overflow-x-hidden hx:p-4 hx:grow hx:md:h-[calc(100vh-var(--navbar-height)-var(--menu-height))]">
|
||||
<ul class="hx:flex hx:flex-col hx:gap-1 hx:md:hidden">
|
||||
|
||||
|
||||
<li class="open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/"
|
||||
|
||||
>Courses
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a><div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/spring-boot/"
|
||||
|
||||
>Spring Boot
|
||||
</a>
|
||||
|
||||
</li><li class="hx:flex hx:flex-col open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/"
|
||||
|
||||
>Introduction to Programming in Java
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/homeworks/"
|
||||
|
||||
>Homeworks
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"
|
||||
href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
||||
</a>
|
||||
|
||||
<ul class='hx:flex hx:flex-col hx:gap-1 hx:relative hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:dark:before:bg-neutral-800 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:pr-3 hx:rtl:before:right-0 hx:ltr:ml-3 hx:rtl:mr-3'></ul>
|
||||
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/lectures/"
|
||||
|
||||
>Lectures
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/lectures/intro/"
|
||||
|
||||
>Lecture 1. Introduction
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/paradigms/"
|
||||
|
||||
>Paradgims of Programming
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div></li>
|
||||
</ul>
|
||||
|
||||
<ul class="hx:flex hx:flex-col hx:gap-1 hx:max-md:hidden">
|
||||
|
||||
<li class=""><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/spring-boot/"
|
||||
|
||||
>Spring Boot
|
||||
</a></li>
|
||||
<li class="open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/"
|
||||
|
||||
>Introduction to Programming in Java
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a><div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/homeworks/"
|
||||
|
||||
>Homeworks
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"
|
||||
href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/lectures/"
|
||||
|
||||
>Lectures
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/lectures/intro/"
|
||||
|
||||
>Lecture 1. Introduction
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li></ul>
|
||||
</div></li>
|
||||
<li class=""><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/paradigms/"
|
||||
|
||||
>Paradgims of Programming
|
||||
</a></li>
|
||||
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
|
||||
<div class=" hx:sticky hx:bottom-0 hx:max-h-(--menu-height) hx:bg-white hx:dark:bg-dark hx:mx-4 hx:py-4 hx:shadow-[0_-12px_16px_#fff] hx:flex hx:items-center hx:gap-2 hx:border-gray-200 hx:dark:border-neutral-800 hx:dark:shadow-[0_-12px_16px_#111] hx:contrast-more:border-neutral-400 hx:contrast-more:shadow-none hx:contrast-more:dark:shadow-none hx:border-t" data-toggle-animation="show"><div class="hx:flex hx:grow hx:flex-col"><div class="hx:flex hx:justify-items-start hx:group" data-theme="light">
|
||||
<button
|
||||
title="Change theme"
|
||||
data-state="closed"
|
||||
data-location="bottom"
|
||||
class="hextra-theme-toggle hx:cursor-pointer hx:rounded-md hx:text-left hx:font-medium hx:h-7 hx:px-2 hx:text-xs hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:font-medium hx:text-gray-600 hx:transition-colors hx:dark:text-gray-400 hx:grow"
|
||||
type="button"
|
||||
aria-label="Change theme"
|
||||
>
|
||||
<div class="hx:flex hx:items-center hx:gap-2 hx:capitalize"><svg height=12 class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z"/></svg><span class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden">Light</span><svg height=12 class="hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/></svg><span class="hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden">Dark</span><svg height=12 class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
|
||||
<path d="M 11.996094,2 C 6.4986225,2.0192368 2.03125,6.5024993 2.03125,12 c 0,5.497501 4.4673725,9.980763 9.964844,10 H 12 12.0039 c 5.497471,-0.01924 9.964844,-4.502499 9.964844,-10 0,-5.4975007 -4.467373,-9.9807632 -9.964844,-10 H 12 Z M 12,4 c 4.417218,0.017598 7.96875,3.5822356 7.96875,8 0,4.417764 -3.551532,7.982402 -7.96875,8 z" />
|
||||
</svg>
|
||||
<span class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden">System</span></div>
|
||||
</button>
|
||||
<ul
|
||||
class="hextra-theme-toggle-options hx:hidden hx:z-20 hx:max-h-64 hx:overflow-auto hx:rounded-md hx:ring-1 hx:ring-black/5 hx:bg-white hx:py-1 hx:text-sm hx:shadow-lg hx:dark:ring-white/20 hx:dark:bg-neutral-800"
|
||||
style="position: fixed; inset: auto auto 0px 0px; margin: 0px; min-width: 100px;"
|
||||
data-theme="light"
|
||||
>
|
||||
<li class="hx:flex hx:flex-col">
|
||||
<p
|
||||
data-item="light"
|
||||
class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
|
||||
>
|
||||
Light
|
||||
<span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
|
||||
</p>
|
||||
</li>
|
||||
<li class="hx:flex hx:flex-col">
|
||||
<p
|
||||
data-item="dark"
|
||||
class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
|
||||
>
|
||||
Dark
|
||||
<span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
|
||||
</p>
|
||||
</li>
|
||||
<li class="hx:flex hx:flex-col">
|
||||
<p
|
||||
data-item="system"
|
||||
class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
|
||||
>
|
||||
System
|
||||
<span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</div></div></div></aside>
|
||||
|
||||
<nav class="hextra-toc hx:order-last hx:hidden hx:w-64 hx:shrink-0 hx:xl:block hx:print:hidden hx:px-4" aria-label="table of contents">
|
||||
<div class="hextra-scrollbar hx:sticky hx:top-16 hx:overflow-y-auto hx:pr-4 hx:pt-6 hx:text-sm [hyphens:auto] hx:max-h-[calc(100vh-var(--navbar-height)-env(safe-area-inset-bottom))] hx:ltr:-mr-4 hx:rtl:-ml-4"><p class="hx:mb-4 hx:font-semibold hx:tracking-tight">On this page</p><ul></ul><ul></ul>
|
||||
<div class="hx:mt-8 hx:border-t hx:bg-white hx:pt-8 hx:shadow-[0_-12px_16px_white] hx:dark:bg-dark hx:dark:shadow-[0_-12px_16px_#111] hx:sticky hx:bottom-0 hx:flex hx:flex-col hx:items-start hx:gap-2 hx:pb-8 hx:border-gray-200 hx:dark:border-neutral-800 hx:contrast-more:border-t hx:contrast-more:border-neutral-400 hx:contrast-more:shadow-none hx:contrast-more:dark:border-neutral-400">
|
||||
<button aria-hidden="true" id="backToTop" onClick="scrollUp();" class="hx:cursor-pointer hx:transition-all hx:duration-75 hx:opacity-0 hx:text-xs hx:font-medium hx:text-gray-500 hx:hover:text-gray-900 hx:dark:text-gray-400 hx:dark:hover:text-gray-100 hx:contrast-more:text-gray-800 hx:contrast-more:dark:text-gray-50">
|
||||
<span>Scroll to top</span>
|
||||
<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="hx:inline hx:ltr:ml-1 hx:rtl:mr-1 hx:h-3.5 hx:w-3.5 hx:rounded-full hx:border hx:border-gray-500 hx:hover:border-gray-900 hx:dark:border-gray-400 hx:dark:hover:border-gray-100 hx:contrast-more:border-gray-800 hx:contrast-more:dark:border-gray-50">
|
||||
<path stroke-linecap="round" stroke-linejoin="round" d="M4.5 15.75l7.5-7.5 7.5 7.5" />
|
||||
</svg>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
</nav>
|
||||
|
||||
|
||||
<article class="hx:w-full hx:break-words hx:flex hx:min-h-[calc(100vh-var(--navbar-height))] hx:min-w-0 hx:justify-center hx:pb-8 hx:pr-[calc(env(safe-area-inset-right)-1.5rem)]">
|
||||
<main class="hx:w-full hx:min-w-0 hx:max-w-6xl hx:px-6 hx:pt-4 hx:md:px-12">
|
||||
|
||||
<div class="content">
|
||||
<h1>Sum</h1>
|
||||
<h1>Task</h1><ol>
|
||||
<li>
|
||||
<p>You need to create a <code>Sum</code> class which will sum integers from command line arguments and output the sum to console.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Examples:</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> <span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Expected output: <code>6</code>.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> -3</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Expected output: <code>0</code>.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>java Sum <span style="color:#e6db74">"1 2 3"</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Expected output: <code>6</code>.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>java Sum <span style="color:#e6db74">"1 2"</span> <span style="color:#e6db74">" 3"</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Expected output: <code>6</code>.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>java Sum <span style="color:#e6db74">" "</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Expected output: <code>0</code>.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Arguments can be:</p>
|
||||
<ul>
|
||||
<li>digits,</li>
|
||||
<li>signes <code>+</code> and <code>-</code>,</li>
|
||||
<li><a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Character.html#isWhitespace%28char%29"target="_blank" rel="noopener">space symbols</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
<li>
|
||||
<p>You can assume that <code>int</code> type is sufficient for in-between calculations and result.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>Before doing the task make sure to read docs for classes <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/String.html"target="_blank" rel="noopener"><code>String</code></a> and <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Integer.html"target="_blank" rel="noopener"><code>Integer</code></a>.</p>
|
||||
</li>
|
||||
<li>
|
||||
<p>For debugging use <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/System.html#err"target="_blank" rel="noopener"><code>System.err</code></a>, because it will be ingnored by the testing program.</p>
|
||||
</li>
|
||||
</ol>
|
||||
<hr>
|
||||
<h1>Solution</h1><p>After reading about <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/String.html"target="_blank" rel="noopener"><code>String</code></a>, <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Integer.html"target="_blank" rel="noopener"><code>Integer</code></a>, <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/System.html#err"target="_blank" rel="noopener"><code>System.err</code></a> we now know about some usefull methods:</p>
|
||||
<ul>
|
||||
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#parseInt-java.lang.String-"target="_blank" rel="noopener"><code>Integer.parseInt(String s, int radix)</code></a> which parses the string argument as a signed integer in the radix specified by the second argument. So it basically converts a number from the <code>String</code> data type to <code>int</code>.</li>
|
||||
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#isWhitespace-char-"target="_blank" rel="noopener"><code>Character.isWhitespace(char ch)</code></a> which checks if a character <code>ch</code> is a space symbol or not.</li>
|
||||
</ul>
|
||||
<p>Now let’s start coding. Firstly let’s define the structure of our program. I will be putting the name of the file at the first line comment in a file and its path if its nessesary.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-java" data-lang="java"><span style="display:flex;"><span><span style="color:#75715e">// Sum.java</span>
|
||||
</span></span><span style="display:flex;"><span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Sum</span> {
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">main</span>(String<span style="color:#f92672">[]</span> args) {
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#75715e">// ...</span>
|
||||
</span></span><span style="display:flex;"><span> }
|
||||
</span></span><span style="display:flex;"><span>}</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Okay that’s done. What do we do next? Let’s look at <code>String[] args</code> argument to our <code>main</code> method. It represents an array of command line arguments which we need to sum. So know we made our task a little bit easier. Now we can just say that we need to find sum of elements of array <code>args</code>.</p>
|
||||
<p>How are we going to do it though? First let’s understand what we can do with this array. Let’s modify our class a little bit.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-java" data-lang="java"><span style="display:flex;"><span><span style="color:#75715e">// Sum.java</span>
|
||||
</span></span><span style="display:flex;"><span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Sum</span> {
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">main</span>(String<span style="color:#f92672">[]</span> args) {
|
||||
</span></span><span style="display:flex;"><span> System.<span style="color:#a6e22e">out</span>.<span style="color:#a6e22e">println</span>(args.<span style="color:#a6e22e">length</span>);
|
||||
</span></span><span style="display:flex;"><span> }
|
||||
</span></span><span style="display:flex;"><span>}</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>We’ve added <code>System.out.println(args.length)</code> which takes the field <code>length</code> from our <code>args</code> object and prints it to the console.</p>
|
||||
<p>Let’s try it. First compile our class using</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ javac Sum.java</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>And then we can do some manual testing.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> <span style="color:#ae81ff">3</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>We got <code>3</code> as an output as expected. We gave our program 3 command line arguments: <code>1</code>, <code>2</code> and <code>3</code>.</p>
|
||||
<p>Here are all of the examples</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> -3
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">"1 2 3"</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hx:overflow-x-auto hx:mt-6 hx:flex hx:flex-col hx:rounded-lg hx:border hx:py-4 hx:px-4 hx:border-gray-200 hx:contrast-more:border-current hx:contrast-more:dark:border-current hx:border-blue-200 hx:bg-blue-100 hx:text-blue-900 hx:dark:border-blue-200/30 hx:dark:bg-blue-900/30 hx:dark:text-blue-200">
|
||||
<p class="hx:flex hx:items-center hx:font-medium"><svg height=16px class="hx:inline-block hx:align-middle hx:mr-2" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>Note</p>
|
||||
|
||||
<div class="hx:w-full hx:min-w-0 hx:leading-7">
|
||||
<div class="hx:mt-6 hx:leading-7 hx:first:mt-0"><p>Notice, that we got 1 instead of 3. That’s because we put our arguments in <code>""</code> so this becomes a single string argument.</p></div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">"1 2"</span> <span style="color:#e6db74">" 3"</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">2</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">" "</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hx:overflow-x-auto hx:mt-6 hx:flex hx:flex-col hx:rounded-lg hx:border hx:py-4 hx:px-4 hx:border-gray-200 hx:contrast-more:border-current hx:contrast-more:dark:border-current hx:border-blue-200 hx:bg-blue-100 hx:text-blue-900 hx:dark:border-blue-200/30 hx:dark:bg-blue-900/30 hx:dark:text-blue-200">
|
||||
<p class="hx:flex hx:items-center hx:font-medium"><svg height=16px class="hx:inline-block hx:align-middle hx:mr-2" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>Note</p>
|
||||
|
||||
<div class="hx:w-full hx:min-w-0 hx:leading-7">
|
||||
<div class="hx:mt-6 hx:leading-7 hx:first:mt-0"><p>Here program gives us 1 instead of 0, because despite not having any numbers in the arguments a single whitespace is still an argument.</p></div>
|
||||
</div>
|
||||
</div>
|
||||
<p>Now let’s try not obly to count our arguments but to list them as well. Let’s modify our program a little bit more.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-java" data-lang="java"><span style="display:flex;"><span><span style="color:#75715e">// Sum.java</span>
|
||||
</span></span><span style="display:flex;"><span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Sum</span> {
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">main</span>(String<span style="color:#f92672">[]</span> args) {
|
||||
</span></span><span style="display:flex;"><span> System.<span style="color:#a6e22e">out</span>.<span style="color:#a6e22e">println</span>(<span style="color:#e6db74">"number of arguments: "</span> <span style="color:#f92672">+</span> args.<span style="color:#a6e22e">length</span>);
|
||||
</span></span><span style="display:flex;"><span>
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#66d9ef">for</span> (String argument : args) {
|
||||
</span></span><span style="display:flex;"><span> System.<span style="color:#a6e22e">out</span>.<span style="color:#a6e22e">println</span>(argument);
|
||||
</span></span><span style="display:flex;"><span> }
|
||||
</span></span><span style="display:flex;"><span> }
|
||||
</span></span><span style="display:flex;"><span>}</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Here I used <code>for</code> loop to do printing <em><strong>for</strong></em> every <code>String</code> element in <code>args</code>.</p>
|
||||
<p>Let’s try this with our examples. And don’t forget to recompile using <code>javac Sum.java</code>.</p>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> <span style="color:#ae81ff">3</span>
|
||||
</span></span><span style="display:flex;"><span>number of arguments: <span style="color:#ae81ff">3</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">2</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> -3
|
||||
</span></span><span style="display:flex;"><span>number of arguments: <span style="color:#ae81ff">3</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">2</span>
|
||||
</span></span><span style="display:flex;"><span>-3</span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">"1 2 3"</span>
|
||||
</span></span><span style="display:flex;"><span>number of arguments: <span style="color:#ae81ff">1</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span> <span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hx:overflow-x-auto hx:mt-6 hx:flex hx:flex-col hx:rounded-lg hx:border hx:py-4 hx:px-4 hx:border-gray-200 hx:contrast-more:border-current hx:contrast-more:dark:border-current hx:border-blue-200 hx:bg-blue-100 hx:text-blue-900 hx:dark:border-blue-200/30 hx:dark:bg-blue-900/30 hx:dark:text-blue-200">
|
||||
<p class="hx:flex hx:items-center hx:font-medium"><svg height=16px class="hx:inline-block hx:align-middle hx:mr-2" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>Note</p>
|
||||
|
||||
<div class="hx:w-full hx:min-w-0 hx:leading-7">
|
||||
<div class="hx:mt-6 hx:leading-7 hx:first:mt-0"><p>Again, notice only <em><strong>one</strong></em> string argument.</p></div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">"1 2"</span> <span style="color:#e6db74">" 3"</span>
|
||||
</span></span><span style="display:flex;"><span>number of arguments: <span style="color:#ae81ff">2</span>
|
||||
</span></span><span style="display:flex;"><span><span style="color:#ae81ff">1</span> <span style="color:#ae81ff">2</span>
|
||||
</span></span><span style="display:flex;"><span> <span style="color:#ae81ff">3</span></span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
|
||||
|
||||
<div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>$ java Sum <span style="color:#e6db74">" "</span>
|
||||
</span></span><span style="display:flex;"><span>number of arguments: <span style="color:#ae81ff">1</span>
|
||||
</span></span><span style="display:flex;"><span> </span></span></code></pre></div></div><div class="hextra-code-copy-btn-container hx:opacity-0 hx:transition hx:group-hover/code:opacity-100 hx:flex hx:gap-1 hx:absolute hx:m-[11px] hx:right-0 hx:top-0">
|
||||
<button
|
||||
class="hextra-code-copy-btn hx:group/copybtn hx:cursor-pointer hx:transition-all hx:active:opacity-50 hx:bg-primary-700/5 hx:border hx:border-black/5 hx:text-gray-600 hx:hover:text-gray-900 hx:rounded-md hx:p-1.5 hx:dark:bg-primary-300/10 hx:dark:border-white/10 hx:dark:text-gray-400 hx:dark:hover:text-gray-50"
|
||||
title="Copy code"
|
||||
>
|
||||
<div class="hextra-copy-icon hx:group-[.copied]/copybtn:hidden hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
<div class="hextra-success-icon hx:hidden hx:group-[.copied]/copybtn:block hx:pointer-events-none hx:h-4 hx:w-4"></div>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<p>Okay, now that we know how to <em><strong>iterate</strong></em> (or do something for every element), we can</p>
|
||||
|
||||
</div>
|
||||
<div class="hx:mt-16"></div>
|
||||
<div class="hx:mt-16"></div>
|
||||
|
||||
</main>
|
||||
</article>
|
||||
</div>
|
||||
|
||||
<footer class="hextra-footer hx:bg-gray-100 hx:pb-[env(safe-area-inset-bottom)] hx:dark:bg-neutral-900 hx:print:bg-transparent"><div class="hextra-custom-footer hextra-max-footer-width hx:pl-[max(env(safe-area-inset-left),1.5rem)] hx:pr-[max(env(safe-area-inset-right),1.5rem)] hx:text-gray-600 hx:dark:text-gray-400"></div><div
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class="hextra-max-footer-width hx:mx-auto hx:flex hx:justify-center hx:py-12 hx:pl-[max(env(safe-area-inset-left),1.5rem)] hx:pr-[max(env(safe-area-inset-right),1.5rem)] hx:text-gray-600 hx:dark:text-gray-400 hx:md:justify-start"
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||||
>
|
||||
<div class="hx:flex hx:w-full hx:flex-col hx:items-center hx:sm:items-start"><div class="hx:font-semibold"><a class="hx:flex hx:text-sm hx:items-center hx:gap-1 hx:text-current" target="_blank" rel="noopener noreferrer" title="Hextra GitHub Homepage" href="https://github.com/imfing/hextra">
|
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|
||||
<script defer src="/en.search.js" integrity=""></script>
|
||||
</body>
|
||||
</html>
|
||||
@@ -178,8 +178,19 @@
|
||||
href="/courses/prog-intro/homeworks/"
|
||||
|
||||
>Homeworks
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
@@ -236,8 +247,19 @@
|
||||
href="/courses/prog-intro/homeworks/"
|
||||
|
||||
>Homeworks
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
|
||||
File diff suppressed because one or more lines are too long
@@ -1,6 +1,6 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en" dir="ltr"><head>
|
||||
<meta name="generator" content="Hugo 0.156.0"><script src="/livereload.js?mindelay=10&v=2&port=1313&path=livereload" data-no-instant defer></script>
|
||||
<meta name="generator" content="Hugo 0.157.0"><script src="/livereload.js?mindelay=10&v=2&port=1313&path=livereload" data-no-instant defer></script>
|
||||
<meta charset="utf-8" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="robots" content="noindex, nofollow" />
|
||||
<link rel="icon shortcut" href="/favicon.ico" sizes="32x32" />
|
||||
@@ -178,8 +178,19 @@
|
||||
href="/courses/prog-intro/homeworks/"
|
||||
|
||||
>Homeworks
|
||||
<span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
|
||||
</a>
|
||||
<div class="hx:ltr:pr-0 hx:overflow-hidden">
|
||||
<ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
href="/courses/prog-intro/homeworks/sum/"
|
||||
|
||||
>Sum
|
||||
</a>
|
||||
|
||||
</li></ul>
|
||||
</div>
|
||||
</li><li class="hx:flex hx:flex-col "><a
|
||||
class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
|
||||
hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
|
||||
|
||||
Reference in New Issue
Block a user