#28

        static void Main(string[] args)
        {
            const string AddNewDossierCommand = "1";
            const string ShowAllDossiersCommand = "2";
            const string RemoveDossierCommand = "3";
            const string SearchLastNameCommand = "4";
            const string ExitCommand = "5";

            bool isWorking = true;

            char splitChar = ' ';
            string[] fullNames = new string[0];
            string[] positionsAtWork = new string[0];

            while (isWorking)
            {
                Console.Clear();
                Console.WriteLine($"{AddNewDossierCommand} ====> Добавить новое досье");
                Console.WriteLine($"{ShowAllDossiersCommand} ====> Вывести все досье");
                Console.WriteLine($"{RemoveDossierCommand} ====> Удалить досье");
                Console.WriteLine($"{SearchLastNameCommand} ====> Поиск по фамилии");
                Console.WriteLine($"{ExitCommand} ====> Выход");

                Console.Write("\nВыберите номер команды: ");
                string inputMessage = Console.ReadLine();

                switch (inputMessage)
                {
                    case AddNewDossierCommand:
                        AddDossier(ref fullNames, ref positionsAtWork);
                        break;

                    case ShowAllDossiersCommand:
                        ShowAllDossiers(positionsAtWork, fullNames);
                        break;

                    case RemoveDossierCommand:
                        DeleteDossier(ref fullNames, ref positionsAtWork);
                        break;

                    case SearchLastNameCommand:
                        SearchDossier(fullNames, positionsAtWork, ref splitChar);
                        break;

                    case ExitCommand:
                        isWorking = false;
                        break;

                    default:
                        Console.WriteLine("Введина неверная комманда!");
                        break;
                }

                if (isWorking == true)
                {
                    Console.Write("\nНажмите любую кнопку для того чтобы продолжить...");
                    Console.ReadKey();
                }
            }
        }

        private static void AddDossier(ref string[] fullNames, ref string[] positionsAtWork)
        {
            Console.Write("Введите ФИО: ");
            string fullname = Console.ReadLine();

            Console.Write("Введите должность сотрудника: ");
            string position = Console.ReadLine();

            fullNames = IncreasDossiers(fullNames, fullname);
            positionsAtWork = IncreasDossiers(positionsAtWork, position);
        }

        private static string[] IncreasDossiers(string[] array, string text)
        {
            string[] tempArray = new string[array.Length + 1];

            for (int i = 0; i < array.Length; i++)
            {
                tempArray[i] = array[i];
            }

            tempArray[tempArray.Length - 1] = text;
            array = tempArray;
            return array;
        }

        private static void ShowAllDossiers(string[] workPositions, string[] fullNames)
        {
            int indexID = 1;

            for (int i = 0; i < workPositions.Length; i++)
            {
                Console.WriteLine($"ID[{indexID}#] - ФИО : {fullNames[i]} - Должность: {workPositions[i]}");
                indexID++;
            }
        }

        private static void DeleteDossier(ref string[] fullNames, ref string[] workPositions)
        {
            Console.Write("Введите id досье для удаления: ");
            int indexRemove = Convert.ToInt32(Console.ReadLine());

            if (indexRemove <= fullNames.Length && indexRemove >= 0 && fullNames.Length != 0)
            {
                var inputIndexConvert = indexRemove - 1;
                fullNames = DecreaseDossier(fullNames, inputIndexConvert);
                workPositions = DecreaseDossier(workPositions, inputIndexConvert);

                Console.WriteLine($"Досье сотрудника с id {indexRemove} удалено!");
            }
            else
            {
                Console.WriteLine($"Сотрудника с id {indexRemove} Несуществует!");
            }
        }

        private static string[] DecreaseDossier(string[] array, int index)
        {
            string[] temporaryArray = new string[array.Length - 1];

            for (int i = 0; i < index; i++)
            {
                temporaryArray[i] = array[i];
            }

            for (int i = index; i < array.Length - 1; i++)
            {
                temporaryArray[i] = array[i + 1];
            }

            array = temporaryArray;
            return array;
        }

        private static void SearchDossier(string[] fullNames, string[] positions, ref char splitChar)
        {
            Console.Write("Введите фамилию сотрудника: ");
            string surname = Console.ReadLine();

            int indexSurname = 0;
            bool isSearchingSuccessful = false;

            for (int i = 0; i < fullNames.Length; i++)
            {
                string[] split = fullNames[i].Split(splitChar);

                if (split[indexSurname].ToLower() == surname.ToLower())
                {
                    Console.WriteLine($"Индекс [{i + 1}#] - ФИО: {fullNames[i]} - должность : {positions[i]}");
                    isSearchingSuccessful = true;
                }
            }

            if (isSearchingSuccessful == false)
            {
                Console.WriteLine($"Сотрудник с фамилией {surname} не найден!");
            }
        }