The_Final_Quest_MidExam_10thOfMarch2019

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

namespace The_Final_Quest_MidExam_10thOfMarch2019
{
    class Program
    {
        static void Main(string[] args)
        {
           List<string> sentence = Console.ReadLine()
                .Split(" ")
                .ToList();

            string instruction = Console.ReadLine();

            while (instruction != "Stop")
            {
                string[] splitedInstruction = instruction.Split(" ");
                string command = splitedInstruction[0];

                if (command == "Delete")
                {
                    int index =int.Parse(splitedInstruction[1]) + 1;

                    if (index > 0 && index <= sentence.Count)
                    {
                        sentence.RemoveAt(index);
                    }

                }
                else if (command == "Swap")
                {
                    string firstWord = splitedInstruction[1];
                    string secondWord = splitedInstruction[2];

                    int indexof1 = sentence.IndexOf(firstWord);
                    int indexOf2 = sentence.IndexOf(secondWord);

                    sentence[indexof1] = secondWord;
                    sentence[indexOf2] = firstWord;
                }
                else if (command == "Put")
                {
                    string word = splitedInstruction[1];
                    int index = int.Parse(splitedInstruction[2]) - 1;

                    if (index > 0 && index <= sentence.Count)
                    {
                        sentence.Insert(index, word);
                    }
                    else if (index == sentence.Count - 1)
                    {
                        sentence.Add(word);
                    }

                }
                else if (command == "Sort")
                {
                    sentence.Sort();
                    sentence.Reverse();
                }
                else if (command == "Replace")
                {
                    string wordOne = splitedInstruction[1];
                    string wordTwo = splitedInstruction[2];

                    int indexOf2 = sentence.IndexOf(wordTwo);

                    if (sentence.Contains(wordTwo))
                    {
                        sentence[indexOf2] = wordOne;
                    }
                }


                instruction = Console.ReadLine();
            }

            if (instruction == "Stop")
            {
                Console.WriteLine(string.Join(" ", sentence));
            }
        }
    }
}