using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var pl = new Playlist();

        var ret = pl.Shuffle();

    }

}

​

public class Playlist

{

    List<ISong> songs;

    //Write a method to Shuffle the songs

    public List<ISong> Shuffle()

    {

        return null;

    }

}

​

public interface ISong

{

}