using System; using System.Collections.Generic; public class Starter { public static void Main() { Console.WriteLine("Forward List"); MyClass obj = new MyClass(); foreach (int item in obj) { Console.Write(item); } Console.WriteLine(" Reverse List"); foreach (int item in obj.Reverse) { Console.Write(item); } } } public class MyClass { private int[] list1 = new int[] { 0, 2, 4, 6, 8 }; public IEnumerator<int> GetEnumerator() { for (int index = 0; index < 5; ++index) { yield return list1[index]; } } public IEnumerable<int> Reverse { get { for (int index = 4; index >= 0; --index) { yield return list1[index]; } } } }