update tests

java/reverse/FastScanner.java

@@ -0,0 +1,43 @@
+package reverse;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class FastScanner {
+    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    String line = null;
+    int pos = 0;
+
+    boolean hasNextLine() throws IOException {
+        if (line != null && pos < line.length()) return true;
+        line = br.readLine();
+        pos = 0;
+        return line != null;
+    }
+
+    boolean hasNextInt() {
+        if (line == null) return false;
+        while (pos < line.length() && Character.isWhitespace(line.charAt(pos))) pos++;
+        return pos < line.length();
+    }
+
+    int nextInt() {
+        while (pos < line.length() && Character.isWhitespace(line.charAt(pos))) pos++;
+        int start = pos;
+        boolean negative = line.charAt(pos) == '-';
+        if (negative) pos++;
+
+        while (pos < line.length() && Character.isDigit(line.charAt(pos))) pos++;
+
+        int result = 0;
+        for (int i = negative ? start + 1 : start; i < pos; i++) {
+            result = result * 10 + (line.charAt(i) - '0');
+        }
+        return negative ? -result : result;
+    }
+
+    void nextLine() {
+        pos = line.length();
+    }
+}

java/reverse/Reverse.java

@@ -40,42 +40,4 @@ public class Reverse {
         }
         out.flush();
     }
-
-    static class FastScanner {
-        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-        String line = null;
-        int pos = 0;
-
-        boolean hasNextLine() throws IOException {
-            if (line != null && pos < line.length()) return true;
-            line = br.readLine();
-            pos = 0;
-            return line != null;
-        }
-
-        boolean hasNextInt() {
-            if (line == null) return false;
-            while (pos < line.length() && Character.isWhitespace(line.charAt(pos))) pos++;
-            return pos < line.length();
-        }
-
-        int nextInt() {
-            while (pos < line.length() && Character.isWhitespace(line.charAt(pos))) pos++;
-            int start = pos;
-            boolean negative = line.charAt(pos) == '-';
-            if (negative) pos++;
-
-            while (pos < line.length() && Character.isDigit(line.charAt(pos))) pos++;
-
-            int result = 0;
-            for (int i = negative ? start + 1 : start; i < pos; i++) {
-                result = result * 10 + (line.charAt(i) - '0');
-            }
-            return negative ? -result : result;
-        }
-
-        void nextLine() {
-            pos = line.length();
-        }
-    }
 }

java/reverse/ReverseEven.java

@@ -0,0 +1,46 @@
+package reverse;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Arrays;
+
+public class ReverseEven {
+    public static void main(String[] args) throws IOException {
+        FastScanner sc = new FastScanner();
+        int[][] lines = new int[8][];
+        int linesCount = 0;
+
+        while (sc.hasNextLine()) {
+            int[] line = new int[8];
+            int count = 0;
+
+            while (sc.hasNextInt()) {
+                if (count >= line.length) {
+                    line = Arrays.copyOf(line, line.length * 2);
+                }
+                line[count++] = sc.nextInt();
+            }
+            sc.nextLine();
+
+            line = Arrays.copyOf(line, count);
+
+            if (linesCount >= lines.length) {
+                lines = Arrays.copyOf(lines, lines.length * 2);
+            }
+            lines[linesCount++] = line;
+        }
+
+        PrintWriter out = new PrintWriter(System.out);
+        for (int i = linesCount - 1; i >= 0; i--) {
+            int[] line = lines[i];
+            for (int j = line.length - 1; j >= 0; j--) {
+                if ((i + j) % 2 == 0) {
+                    if (j < line.length - 1) out.print(" ");
+                    out.print(line[j]);
+                }
+            }
+            out.println();
+        }
+        out.flush();
+    }
+}

java/reverse/ReverseMaxC.java

@@ -0,0 +1,44 @@
+package reverse;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Arrays;
+
+public class ReverseMaxC {
+    public static void main(String[] args) throws IOException {
+        FastScanner sc = new FastScanner();
+        int[][] lines = new int[8][];
+        int linesCount = 0;
+
+        while (sc.hasNextLine()) {
+            int[] line = new int[8];
+            int count = 0;
+
+            while (sc.hasNextInt()) {
+                if (count >= line.length) {
+                    line = Arrays.copyOf(line, line.length * 2);
+                }
+                line[count++] = sc.nextInt();
+            }
+            sc.nextLine();
+
+            line = Arrays.copyOf(line, count);
+
+            if (linesCount >= lines.length) {
+                lines = Arrays.copyOf(lines, lines.length * 2);
+            }
+            lines[linesCount++] = line;
+        }
+
+        PrintWriter out = new PrintWriter(System.out);
+        for (int i = linesCount - 1; i >= 0; i--) {
+            int[] line = lines[i];
+            for (int j = line.length - 1; j >= 0; j--) {
+                if (j < line.length - 1) out.print(" ");
+                out.print(line[j]);
+            }
+            out.println();
+        }
+        out.flush();
+    }
+}

java/reverse/ReverseRotate.java

@@ -0,0 +1,52 @@
+package reverse;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Arrays;
+
+public class ReverseRotate {
+    public static void main(String[] args) throws IOException {
+        FastScanner sc = new FastScanner();
+        int[][] lines = new int[8][];
+        int linesCount = 0;
+        int maxCols = 0;
+
+        while (sc.hasNextLine()) {
+            int[] line = new int[8];
+            int count = 0;
+
+            while (sc.hasNextInt()) {
+                if (count >= line.length) {
+                    line = Arrays.copyOf(line, line.length * 2);
+                }
+                line[count++] = sc.nextInt();
+            }
+            sc.nextLine();
+
+            line = Arrays.copyOf(line, count);
+
+            if (linesCount >= lines.length) {
+                lines = Arrays.copyOf(lines, lines.length * 2);
+            }
+            lines[linesCount++] = line;
+
+            if (count > maxCols) {
+                maxCols = count;
+            }
+        }
+
+
+        PrintWriter out = new PrintWriter(System.out);
+
+        for (int j = 0; j < maxCols; j++) {
+            for (int i = linesCount - 1; i >= 0; i--) {
+                if (lines[i].length > j) {
+                    out.print(lines[i][j] + " ");
+                }
+            }
+            out.println();
+        }
+
+        out.flush();
+    }
+}

java/reverse/test.dat

@@ -1,2 +0,0 @@
-1 2
-3