add solutions for hw5

.gitea/workflows/fast-reverse.yml

@@ -19,4 +19,4 @@ jobs:
       
       - name: Run Fast Reverse tests
         run: |
-          java -ea -cp out reverse.FastReverseTest Base 3233 3435 3637 3839 4142 4749
+          java -ea -cp out reverse.FastReverseTest Base 3233

java/wordStat/WordStat.java

@@ -1,4 +1,5 @@
 import java.io.*;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 public class WordStat {
@@ -24,7 +25,7 @@ public class WordStat {
             Character.isLetter(c) || c == '\'') {
           sb.append(c);
         } else {
-          if (sb.length() > 0) {
+          if (!sb.isEmpty()) {
             String word = sb.toString().toLowerCase();
             wordCount.put(word, wordCount.getOrDefault(word, 0) + 1);
             sb.setLength(0);
@@ -36,7 +37,7 @@ public class WordStat {
 
       r.close();
 
-      PrintWriter writer = new PrintWriter(outputFileName, "UTF-8");
+      PrintWriter writer = new PrintWriter(outputFileName, StandardCharsets.UTF_8);
 
       for (Map.Entry<String, Integer> entry : wordCount.entrySet()) {
         String key = entry.getKey();