using System;

using System.Linq;

using System.Collections.Generic;

​

public static class LinqExtensions

    {

        public static void DisplayConsoleByInsert<T>(this IEnumerable<T> list)

        {

            int end = list.Count() -1; 

            for(int start = 0; start < end; start++, end--)

            {

                Console.WriteLine(list.ElementAt(start));

                Console.WriteLine(list.ElementAt(end));

            }

        }

    }

public static class Program

{

    public static void Main()

    {

        int[] numeros = new int[] {10, 5, 30, 45, 2, 35, 12};

        int end = numeros.Count() -1;

        numeros

            .ToList()

            .OrderBy(x => x)

            .DisplayConsoleByInsert();

    }

​

}

​

​