Append Arrays

using System;
using System.Collections.Generic;
using System.Linq;

namespace Append_Arrays
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> whole = Console.ReadLine()
                .Split("|")
                .Reverse()
                .ToList();

            List<int> resultList = new List<int>();

            for (int i = 0; i < whole.Count; i++)
            {
                List<int> currentResult = new List<int>(whole[i]
                    .Split(" ", StringSplitOptions.RemoveEmptyEntries).Select(int.Parse)
                    .ToList());

                resultList.AddRange(currentResult);
            }

            Console.WriteLine(string.Join(" ", resultList));
        }
    }
}