test (C# Shell App Paste)

//Disclaimer: The creator of 'C# Shell (C# Offline Compiler)' is in no way responsible for the code posted by any user.
using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

namespace CSharp_Shell
{
    public enum Rotation {right, left};
    public class Matrix
    {
        private int[,] arr;
        private int length;

        public int this[int index1, int index2]
        {
            set{
                arr[index1, index2] = value;
            }
            get{
                return arr[index1, index2];
            }
        }
        public Matrix(int length)
        {
            arr = new int[length, length];
            this.length = length;
        }
        public void Print()
        {
            for(int a = 0; a < length; a++)
            {
                for(int b = 0; b < length; b++)
                    Console.Write(arr[a,b]);
                Console.WriteLine("");
            }
        }
        public void RandomFill()
        {
            Random rand = new Random();
            for(int i = 0; i < arr.Length; i++)
            {
                arr[i/length, i%length] = rand.Next(9);
            }
        }
        public void Rotate(Rotation rot=Rotation.right, int times=1)
        {
            for(int t = 0; t < times; t++)
            {
                int[,] result = new int[length, length];

            for (int i = 0; i < length; i++)
            for (int j = 0; j < length; j++)
            result[i, j] = (rot == Rotation.right)?(arr[length - j - 1, i]):(arr[j, length - i - 1]);

            arr = result;
            }
        }
    }

    public static class Program
    {
        public static void Main()
        {
            int num = Console.ReadLine<Int32>();
            Matrix matrix = new Matrix(num);
            string s;
            do
            {
                s = Console.ReadLine();
                switch(s)
                {
                    case "right":
                    case "left":
                        matrix.Rotate((s == "right")?Rotation.right:Rotation.left, Console.ReadLine<Int32>());
                        break;
                    case "print":
                        matrix.Print();
                        break;
                    case "random":
                        matrix.RandomFill();
                        break;
                }
            } while(s != "exit");
            matrix.RandomFill();
            matrix.Print();
            Console.WriteLine("-------");
            matrix.Rotate();
            matrix.Print();
        }
    }
}