using System;

using System.Collections.Generic;

​

namespace CardShuffle

{

    public class Program

    {

        public void Main()

        {

            const int H = 9829; // Hearts

            const int D = 9830; // Diamonds

            const int C = 9827; // Clubs

            const int S = 9824; // Spades

​

            string[] cards = new string[52] {

                (char)H + "A", (char)H + "2", (char)H + "3", (char)H + "4", (char)H + "5", (char)H + "6", (char)H + "7", (char)H + "8", (char)H + "9", (char)H + "10", (char)H + "J", (char)H + "Q", (char)H + "K",

                (char)D + "A", (char)D + "2", (char)D + "3", (char)D + "4", (char)D + "5", (char)D + "6", (char)D + "7", (char)D + "8", (char)D + "9", (char)D + "10", (char)D + "J", (char)D + "Q", (char)D + "K",

                (char)C + "A", (char)C + "2", (char)C + "3", (char)C + "4", (char)C + "5", (char)C + "6", (char)C + "7", (char)C + "8", (char)C + "9", (char)C + "10", (char)C + "J", (char)C + "Q", (char)C + "K",

                (char)S + "A", (char)S + "2", (char)S + "3", (char)S + "4", (char)S + "5", (char)S + "6", (char)S + "7", (char)S + "8", (char)S + "9", (char)S + "10", (char)S + "J", (char)S + "Q", (char)S + "K"

            };

​

            Console.WriteLine("Unshuffled cards...");

​

            for (int j = 0; j < cards.Length; j++)

            {

                if (j % 13 == 0)

                    Console.Write("\n");

                Console.Write("{0} ", cards[j]);

            }

            Random rd = new Random();

            int randomNum = rd.Next(0,100)+1;

            var shuffling = cards.OrderBy(cards => rd.Next());

            // Shuffling

            // bool shuttle_end = false;

            List<int> repeat = new List<int>();

            for (int k = 0; k < 52; k++) {

                int tmpN = rd.Next(0,100)+1;

                while (!repeat.Contains(tmpN)) {

                }

            }

            Console.WriteLine("\n\nShuffled cards...");

​

            // *****************************************************************

            // Task: Complete the program to randomly shuffle the cards.

            // Hint: You can use the Random class to generate a random number

            // less than the specified maximum e.g.

            // Random random = new Random();

            // int position = random.Next(52);

            // *****************************************************************

​

            for (int j = 0; j < cards.Length; j++)

            {

                if (j % 13 == 0)

                    Console.Write("\n");

                Console.Write("{0} ", cards[j]);

            }

​

            Console.WriteLine("\n\nPress any key to continue...");

            Console.ReadLine();

        }

    }

}