Data commit

Task/Dutch-national-flag-problem/Java/dutch-national-flag-problem.java

@@ -0,0 +1,30 @@
+import java.util.Arrays;
+import java.util.Random;
+
+public class DutchNationalFlag {
+    enum DutchColors {
+        RED, WHITE, BLUE
+    }
+
+    public static void main(String[] args){
+        DutchColors[] balls = new DutchColors[12];
+        DutchColors[] values = DutchColors.values();
+        Random rand = new Random();
+
+        for (int i = 0; i < balls.length; i++)
+            balls[i]=values[rand.nextInt(values.length)];
+        System.out.println("Before: " + Arrays.toString(balls));
+
+        Arrays.sort(balls);
+        System.out.println("After:  " + Arrays.toString(balls));
+
+        boolean sorted = true;
+        for (int i = 1; i < balls.length; i++ ){
+            if (balls[i-1].compareTo(balls[i]) > 0){
+                sorted=false;
+                break;
+            }
+        }
+        System.out.println("Correctly sorted: " + sorted);
+    }
+}