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Task/Sorting-algorithms-Sleep-sort/Java/sorting-algorithms-sleep-sort.java

@@ -0,0 +1,31 @@
+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 = new int[args.length];
+		for (int i = 0; i < args.length; i++)
+			nums[i] = Integer.parseInt(args[i]);
+		sleepSortAndPrint(nums);
+	}
+}