update tests

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();
+    }
+}