import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;public class DeleteSame {
 public static void main(String args[]) {
   Set<Integer> s = new HashSet<Integer>();
   for (int i = 0; i < 50; i++) {
    s.add((int) (Math.random() * 50));  }
  Iterator<Integer> it = s.iterator();
   while (it.hasNext()) {
    Integer i = it.next();
    System.out.println(i);
   } }
}