using System;

using System.Text.RegularExpressions;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        ArrayList al = new ArrayList{1,2,3};

        int[] il = new int[]{1,2,3};

        Console.WriteLine(al.GetEnumerator());  

        Console.WriteLine(il.GetEnumerator());  

    }

}