Sequence of Commands

using System;
using System.Linq;

namespace Sequence_of_Commands
{
    class Program
    {

        public class ArraysMain
        {
            private const char ArgumentsDelimiter = ' ';

            public static void Main()
            {
                int sizeOfArray = int.Parse(Console.ReadLine());

                long[] array = Console.ReadLine().Split(ArgumentsDelimiter).Select(long.Parse).ToArray();

                string[] command = Console.ReadLine().Split(' ').ToArray();

                while (command[0] != "stop")
                {

                    int[] args = new int[2];

                    if (command[0] == "add" ||
                        command[0] == "subtract" ||
                        command[0] == "multiply")
                    {

                        args[0] = int.Parse(command[1]);
                        args[1] = int.Parse(command[2]);
                        PerformAction(array, command[0], args);
                    }
                    else
                    {
                        PerformAction(array, command[0], args);
                    }
                    PrintArray(array);

                    Console.WriteLine();

                    command = Console.ReadLine().Split(' ').ToArray();
                }
            }

            static void PerformAction(long[] array, string action, int[] args)
            {

                int pos = args[0];
                int value = args[1];

                switch (action)
                {
                    case "multiply":
                        array[pos - 1] *= value;
                        break;
                    case "add":
                        array[pos - 1] += value;
                        break;
                    case "subtract":
                        array[pos - 1] -= value;
                        break;
                    case "lshift":
                        ArrayShiftLeft(array);
                        break;
                    case "rshift":
                        ArrayShiftRight(array);
                        break;

                }
            }

            private static void ArrayShiftRight(long[] array)
            {
                long num = array[array.Length - 1];
                for (int i = array.Length - 1; i >= 1; i--)
                {
                    array[i] = array[i - 1];
                }
                array[0] = num;
            }

            private static void ArrayShiftLeft(long[] array)
            {
                long num = array[0];
                for (int i = 0; i < array.Length - 1; i++)
                {
                    array[i] = array[i + 1];
                }
                array[array.Length - 1] = num;
            }

            private static void PrintArray(long[] array)
            {
                for (int i = 0; i < array.Length; i++)
                {
                    Console.Write(array[i] + " ");
                }

            }
        }
    }
}