import java.util.*;

public class MyQueueDemo {

    public static void main(String[] args) {
        
        MyQueue q = new MyQueueArray();
        // MyQueue q = new MyQueueList();

        Random r = new Random(123);

        Enumeration e;

        System.out.print("enqueue:  ");
        for (int count = 0; count < 4; count++) {
            int item = r.nextInt(100);
            System.out.print(" " + item);
            q.enqueue(new Integer(item));
        }
        System.out.println();

        System.out.print("enumerate:");
        e = q.elements();
        while (e.hasMoreElements()) {
            System.out.print(" " + e.nextElement());
        }
        System.out.println();

        System.out.print("dequeue:  ");
        for (int count = 0; count < 1; count++) {
            System.out.print(" " + q.dequeue());
        }
        System.out.println();

        System.out.print("enumerate:");
        e = q.elements();
        while (e.hasMoreElements()) {
            System.out.print(" " + e.nextElement());
        }
        System.out.println();

        System.out.print("enqueue:  ");
        for (int count = 0; count < 2; count++) {
            int item = r.nextInt(100);
            System.out.print(" " + item);
            q.enqueue(new Integer(item));
        }
        System.out.println();
 
        System.out.print("enumerate:");
        e = q.elements();
        while (e.hasMoreElements()) {
            System.out.print(" " + e.nextElement());
        }
        System.out.println();

    }
  
}