using System;
using System.Collections.Generic;
public class Starter {
public static void Main() {
MyClass obj = new MyClass();
foreach (int item in obj) {
Console.Write(item);
}
}
}
public class MyClass {
private int[] list1 = new int[] { 0, 2, 4, 6, 8 };
private int[] list2 = new int[] { 1, 3, 5, 7, 9 };
public IEnumerator GetEnumerator() {
for (int index = 0; index < 4; ++index) {
yield return list1[index];
yield return list2[index];
}
}
}