Exam-30.06.2019-03.ContactList

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

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

            string[] command = Console.ReadLine().Split();
            string word = command[0];

            while (word != "Print")
            {
                if (word == "Add")
                {
                    string name = command[1];
                    int index = int.Parse(command[2]);

                    if (index >= 0 && index < contacts.Count)
                    {
                        if (!contacts.Contains(name))
                        {
                            contacts.Add(name);
                        }
                        else
                        {
                            contacts.Insert(index, name);
                        }
                    }
                }
                else if (word == "Remove")
                {
                    int index = int.Parse(command[1]);

                    if (index >= 0 && index < contacts.Count)
                    {
                        contacts.RemoveAt(index);
                    }
                }
                else if (word == "Export")
                {
                    int startIndex = int.Parse(command[1]);
                    int count = int.Parse(command[2]);

                    List<string> exportedContacts = new List<string>();

                    int lastIndex = startIndex + count;

                    if (lastIndex > contacts.Count)
                    {
                        lastIndex = contacts.Count;
                    }

                    for (int i = startIndex; i < lastIndex; i++)
                    {
                        exportedContacts.Add(contacts[i]);
                    }
                    Console.WriteLine(string.Join(" ", exportedContacts));
                }
                command = Console.ReadLine().Split();
                word = command[0];
            }

            string type = command[1];
            if (type == "Normal")
            {
                Console.WriteLine("Contacts: " + string.Join(" ", contacts));
            }
            else if (type == "Reversed")
            {
                contacts.Reverse();
                Console.WriteLine("Contacts: " + string.Join(" ", contacts));
            }
        }
    }
}