C# Funamdentals - 03. MemoryGame - MidExam 12.08.2020

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

namespace _03._MemoryGame
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> memoryGame = Console.ReadLine()
                                      .Split()
                                      .ToList();

            int numberOfMoves = 0;
            string command = Console.ReadLine();
            while (command != "end")
            {
                string[] currentCommand = command.Split();
                int index1 = int.Parse(currentCommand[0]);
                int index2 = int.Parse(currentCommand[1]);
                numberOfMoves += 1;

                if ((index1 == index2)
                    || (index1 < 0 || memoryGame.Count - 1 < index1)
                    || (index2 < 0 || memoryGame.Count - 1 < index2))
                {
                    Console.WriteLine("Invalid input! Adding additional elements to the board");
                    memoryGame.Insert(memoryGame.Count / 2, $"-{numberOfMoves}a");
                    memoryGame.Insert(memoryGame.Count / 2, $"-{numberOfMoves}a");

                    command = Console.ReadLine();
                    continue;
                }
                if (memoryGame[index1] == memoryGame[index2])
                {
                    string print = memoryGame[index1];
                    memoryGame.Remove(print);
                    memoryGame.Remove(print);

                    Console.WriteLine($"Congrats! You have found matching elements - {print}!");
                }

                else if (memoryGame[index1] != memoryGame[index2])
                {
                    Console.WriteLine("Try again!");
                }

                command = Console.ReadLine();

                if (memoryGame.Count == 0)
                {
                    Console.WriteLine($"You have won in {numberOfMoves} turns!");
                    return;
                }
            }

            Console.WriteLine("Sorry you lose :(");
            Console.WriteLine(string.Join(' ', memoryGame));
        }
    }
}