import java.util.*;

public class RandomSet
{
	public static void main (String[ ] args) 
	{
	      	final int SEED = 111;
      
      		Set<Integer> randSet = new TreeSet<Integer>();
      
      		Random r = new Random (SEED);
      
      		// Add 10 random integers, in the range 0...99, to randSet:
      		int i = 0;
      		while (i < 10)
          		if (randSet.add (r.nextInt (100)))
             			i++;
      
      		// Print out randSet:
      		System.out.println (randSet);
      
      		// See if 22 is in randSet:
      		if (randSet.contains (22))
          		System.out.println ("Yes, 22 is in randSet.");
      		else
          		System.out.println ("No, 22 is not in randSet.");

		// Print out randSet:
		System.out.println (randSet);
            
      		// Remove all even Integers:
      		Iterator<Integer> itr = randSet.iterator();
      		while (itr.hasNext())      		
          		if (itr.next() % 2 == 0)
              			itr.remove(); 
      
       		// Print out randSet;
       		System.out.println (randSet);
	} // method main

} // RandomSet