java8 : parallel sort

java8to11/src/parallelSort/App.java

@@ -0,0 +1,25 @@
+package parallelSort;
+
+import java.util.Arrays;
+import java.util.Random;
+import java.util.stream.IntStream;
+
+public class App {
+    public static void main(String[] args) {
+        int size = 1500;
+        int[] numbers = new int[size];
+        Random random = new Random();
+        IntStream.range(0, size).forEach(i -> numbers[i] = random.nextInt());
+
+        long start = System.nanoTime();
+        Arrays.sort(numbers);
+        System.out.println("serial sorting took: " + (System.nanoTime() - start));
+
+        System.out.println("=====================================================");
+
+        IntStream.range(0, size).forEach(i -> numbers[i] = random.nextInt());
+        start = System.nanoTime();
+        Arrays.parallelSort(numbers);
+        System.out.println("parallel sorting took: " + (System.nanoTime() - start));
+    }
+}