using System;

using System.Collections.Generic;                   

public class Program

{

    public class Key<T>

{

    public T key;

    public int val;

}

​

public static List<Key<T>> Sort<T>(List<Key<T>> l)

{

        l.Sort((a,b) => a.val.CompareTo(b.val));

        return l;

}

​

​

​

    public static void Main()

    {

        var stringKeys = new List<Key<string>>

        {

           new Key<string> { val = 2, key = "two"},

           new Key<string> { val = 1, key = "one"}, 

        };

        var sorted = Sort(stringKeys);

        foreach(var item in sorted)

        Console.WriteLine("val:" + item.val.ToString() + " key:" + item.key);

        var intKeys = new List<Key<int>>

        {

           new Key<int> { val = 2, key = 20},

           new Key<int> { val = 1, key = 10},   

        };

        var sorted2 = Sort(intKeys);

        foreach(var item in sorted2)

        Console.WriteLine("val:" + item.val.ToString() + " key:" + item.key.ToString());

    }

}