List Manipulation

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

namespace SoftUniLists
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Enter your numbers here: ");
            List<int> numbers = ReadList();
            Console.WriteLine("There are several command you can use now:");
            Console.WriteLine("Add {} - adds the given number to the list.");
            Console.WriteLine("Remove {} - removes the given number from  the list.");
            Console.WriteLine("RemoveAt {} - removes a number from the given index.");
            Console.WriteLine("Insert {number} {index}  - removes a given number from a given index.");
            Console.WriteLine("end - stops the program and prints the final list.");
            while (true)
            {
                string line = Console.ReadLine();
                if(line == "end")
                {
                    break;
                }

                string[] tokens = line.Split();
                switch (tokens[0])
                {
                    case "Add":
                        Add(numbers,int.Parse(tokens[1]));
                        break;
                    case "Remove":
                        Remove(numbers, int.Parse(tokens[1]));
                        break;
                    case "RemoveAt":
                        RemoveAt(numbers, int.Parse(tokens[1]));
                        break;
                    case "Insert":
                        Insert(numbers, int.Parse(tokens[1]), int.Parse(tokens[2]));
                        break;
                    default:
                        Console.WriteLine("Invalid command!");
                        break;
                }
            }

            Console.WriteLine(string.Join(" ", numbers));

        }

        static List<int> ReadList()
        {
            List<int> list = new List<int>();
            var line = Console.ReadLine();
            list = line.Split().Select(int.Parse).ToList();
            return list;
        }


        static void Add(List<int> numbers,int num)
        {
            numbers.Add(num);
        }

        static void Remove(List<int> numbers, int num)
        {
            numbers.Remove(num);
        }

        static void RemoveAt(List<int> numbers, int index)
        {
            numbers.RemoveAt(index);
        }

        static void Insert(List<int> numbers, int num,int index)
        {
            numbers.Insert(index,num);
        }
    }
}