07. List Manipulation Advanced

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

namespace _06._List_Manipulation_Basics
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> intList = Console.ReadLine().Split().Select(int.Parse).ToList();

            List<string> stringCommand = Console.ReadLine().Split().ToList(); // stringCommand = Contains 100, Filter >= 43 и пр.
            List<int> commandResultList = new List<int>();
            bool isChanged = false;

            while (stringCommand[0] != "end")
            {
                switch (stringCommand[0])
                {
                    case "Add":
                        intList.Add(int.Parse(stringCommand[1]));
                        isChanged = true;
                        break;
                    case "Remove":
                        intList.Remove(int.Parse(stringCommand[1]));
                        isChanged = true;
                        break;
                    case "RemoveAt":
                        intList.RemoveAt(int.Parse(stringCommand[1]));
                        isChanged = true;
                        break;
                    case "Insert":
                        intList.Insert(int.Parse(stringCommand[2]), int.Parse(stringCommand[1]));
                        isChanged = true;
                        break;
                    case "Contains":
                        if (intList.Contains(int.Parse(stringCommand[1])))
                        {
                            Console.WriteLine("Yes");
                        }
                        else
                        {
                            Console.WriteLine("No such number");
                        }
                        break;
                    case "PrintEven":
                        commandResultList = intList.Where(x => x % 2 == 0).ToList();
                        Console.WriteLine(string.Join(" ", commandResultList));
                        break;
                    case "PrintOdd":
                        commandResultList = intList.Where(x => x % 2 != 0).ToList();
                        Console.WriteLine(string.Join(" ", commandResultList));
                        break;
                    case "GetSum":
                        int sum = 0;
                        for (int i = 0; i < intList.Count; i++)
                        {
                            sum += intList[i];
                        }
                        Console.WriteLine(sum);
                        break;
                    case "Filter":
                        if (stringCommand[1] == "<")
                        {
                            commandResultList = intList.Where(x => x < int.Parse(stringCommand[2])).ToList();
                        }
                        else if (stringCommand[1] == ">")
                        {
                            commandResultList = intList.Where(x => x > int.Parse(stringCommand[2])).ToList();
                        }
                        else if (stringCommand[1] == ">=")
                        {
                            commandResultList = intList.Where(x => x >= int.Parse(stringCommand[2])).ToList();
                        }
                        else if (stringCommand[1] == "<=")
                        {
                            commandResultList = intList.Where(x => x <= int.Parse(stringCommand[2])).ToList();
                        }

                        Console.WriteLine(string.Join(" ", commandResultList));
                        break;
                    default:
                        break;
                }

                stringCommand = Console.ReadLine().Split().ToList();
            }

            if (isChanged)
            {
                Console.WriteLine(string.Join(" ", intList));
            }
        }
    }
}