SleepSort.java

package sorting;

import java.util.concurrent.CountDownLatch;

public class SleepSort {
	public static void sleepSortAndPrint(int[] nums) {
		final CountDownLatch doneSignal = new CountDownLatch(nums.length);
		for (final int num : nums) {
			new Thread(new Runnable() {
				public void run() {
					doneSignal.countDown();
					try {
						doneSignal.await();
 
						//using straight milliseconds produces unpredictable
						//results with small numbers
						//using 1000 here gives a nifty demonstration
						Thread.sleep(num * 1000);
						System.out.println(num);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}).start();
		}
	}
	public static void main(String[] args) {
		int[] nums = {2,5,6,4,11,22,10,1};
		
		System.out.println("Sorted array is:");
		sleepSortAndPrint(nums);
	}
}