using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    private static List<int> Mix(List<int> list1, List<int> list2) {

        // this function will reutrn a new list composed of items from the two lists passed in

        // The first item will come from list1

    }

}

​

public class ListUtility

{

    public 

    public List<int> Mix(List<int> list1, List<int> list2) {

        // this function will reutrn a new list composed of items from the two lists passed in

        // The first item will come from list1

    }