using System;

using System.Collections.Generic;

using System.Linq;

​

namespace ConsoleApp1

{

    class Program

    {

        static void Main(string[] args)

        {

            var list = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

            var sorted = SortMinMax(list);

            foreach (var i in sorted) Console.WriteLine(i);

        }

           private static List<int> SortMinMax(List<int> list)

        {

            var result = new List<int>();

            while (list.Count > 0)

            {

                var minVal = list.Min();

                var maxVal = list.Max();

​

                result.Add(minVal);

                list.Remove(minVal);

​

                result.Add(maxVal);

                list.Remove(maxVal);

            }

​

            return result;

        }

    }

}

​