using System;

using System.Collections.Generic;

using System.Linq;

​

public class LaborService {

    public string Value;

    public int Order;

}

public class Program

{

    public static List<LaborService> Tranpose(List<LaborService> laborService)

    {

        int half = (int)Math.Ceiling((decimal)(laborService.Count)/2);

        for (int i = 0; i < laborService.Count; i++)

        {

            if (i < half)

                laborService[i].Order = 2 * i;

            else

                laborService[i].Order = (i - half) + 1;

        }

        return laborService.OrderBy(x => x.Order).ToList();

    }

    public static void Main()

    {

        List<LaborService> l = new List<LaborService>();

        foreach (var c in "ABCDEFHGIJ") {

            l.Add(new LaborService() { Value = c.ToString() });

        }

        var t = Tranpose(l);

        foreach (var i in t) {

            Console.Write(i.Value);

            Console.Write(", ");

        }

        Console.WriteLine();

        foreach (var i in l) {

            Console.Write(i.Value);

            Console.Write(", ");

        }

    }

}