Program 1                                                       
 
Assigned date: September 23, 2003 

Due date:  September 30, 2003  (@5:30 p.m.)

Delivery mechanism: hard copy (compiled .java source code + output of program)

Grade: 50 points on time or 25 points for late.

please check the following on my web site:

  
For this assignment, you will implement java.util.Enumeration several different 
ways. Here is the puzzle (NOTE: YOUR PROGRAM MUST WORK FOR ANY List).


----------------
import java.util.*;

public class MyClass {
     
   private List list = null; 
 
   public MyClass(int size) {
     list = new ArrayList();
     for (int i=0; i < size; i++) {
     	list.add(new Integer(i));
     }
   }

  
   public Enumeration forward() {
     //will enumerate array elements from index 0 to (size-1) 
   }
   
   public Enumeration backward() {
     //will enumerate array elements from index (size-1) to 0 
   }

   public Enumeration any() {
     //will enumerate array elements in any random order 
   }
   
   public Enumeration even() {
     //will enumerate even indexed array elements 
     // even indexes are: 0, 2, 4, ...
   }

   public Enumeration odd() {
     //will enumerate odd indexed array elements 
     // even indexes are: 1, 3, 5, ...
   }

   // inner classes for implementing forward(), backward(),
   // random(), even(), and odd() methods

}


/**
 * driver class
 */
public class TestMyClass {

   public static void main(String[] args) throws Exception {

	int size = Integer.parseInt(args[0]);
	
     	//
     	// test forward()
     	//
	MyClass mine = new MyClass(size);
	Enumeration forward = mine.forward();
	while (forward.hasMoreElements()) {
		Integer i = (Integer) forward.nextElement();
		System.out.print("\t\t"+i);
	}
	System.out.print("  -------");
	
	//
	// test backward()
	//
	MyClass mine2 = new MyClass(size);
	Enumeration backward = mine2.backward();
	while (backward.hasMoreElements()) {
		Integer i = (Integer) backward.nextElement();
		System.out.print("\t\t"+i);
	}
	System.out.print("  -------");
	

	//
	// test any()
	// 
	MyClass mine3 = new MyClass(size);
	Enumeration any = mine3.any();
	while (any.hasMoreElements()) {
		Integer i = (Integer) any.nextElement();
		System.out.print("\t\t"+i);
	}
	System.out.print("  -------");
	
	//
	// test even()
	// 
	MyClass mine4 = new MyClass(size);
	Enumeration even = mine4.any();
	while (even.hasMoreElements()) {
		Integer i = (Integer) even.nextElement();
		System.out.print("\t\t"+i);
	}
	System.out.print("  -------");

	//
	// test odd()
	// 
	MyClass mine5 = new MyClass(size);
	Enumeration odd = mine5.odd();
	while (odd.hasMoreElements()) {
		Integer i = (Integer) odd.nextElement();
		System.out.print("\t\t"+i);
	}
	System.out.print("  -------");
   }
}