/**
 * Title: HashSetPlay
 * Description: Simple example of using HashSet
 * @author hollingd@cs.rpi.edu
 */
import java.util.*;

class HashSetPlay {

	public static void main(String [] args ) {

		// Create an ArrayList object
		HashSet x = new HashSet();

		// Populate with 10 random Integer objects
		Random r = new Random();

		for (int i=0;i<20;i++) {
			if (! x.add( new Integer(r.nextInt(100)))) {
				System.out.println("Duplicate!");
			}
				
		}
		System.out.println("Set: " + x);

		// print all elements of x using iterator
		Iterator i = x.iterator();

		while (i.hasNext()) {
			int y = ((Integer) i.next()).intValue();
			System.out.print( y + " ");
		}
		System.out.println();

	}




}