using System.Collections.Generic;

using System;

​

public class HelloWorld

{

    public static List<string> deck { get; set; }

    public static List<string> deckRemoved { get; set; }

    static Random rnd = new Random();

    public static int D_aceCount;

    public static int P_aceCount;

    public static int D_sum;

    public static int P_sum;

    public static void Main(string[] args)

    {

        generatedeck(4);

​

        for (int i = 0; i < deck.Count; i++)

        {

      //      Console.WriteLine(deck[i]);

        }

        Console.WriteLine(standchance(10,"5"));

    }

​

    public static void generatedeck(int decks)

    {

        deck = new List<string>(); // Initialize the list here

        deckRemoved = new List<string>(); // Initialize the list here

        for (int i = 0; i < decks; i++)

        {

            deck.Add("2");

            deck.Add("3");

            deck.Add("4");

            deck.Add("5");

            deck.Add("6");

            deck.Add("7");

            deck.Add("8");

            deck.Add("9");

            deck.Add("10");

            deck.Add("J");

            deck.Add("Q");

            deck.Add("K");

            deck.Add("A");

        }

    }

    //calculates ev of one hand

    public static double standchance(int playerhand, string dealerhand)

    {

       int playerwins = 0;

       int dealerwins = 0;

       int draws = 0;

​

        for (int i = 0; i < 1000000; i++)

        {                                           //averages

         //   for (int j = 0; j < deckRemoved.Count; j++)

          //  {                      //reset all values

           //     deck.Add(deckRemoved[i]);

          //  }

        //  deckRemoved.Clear();

            deck.AddRange(deckRemoved); // Add remaining cards back before clearing

    deckRemoved.Clear(); // Clear now since they have been re-added

​

            D_aceCount = 0;

            D_sum = returncard(dealerhand);

            P_sum = playerhand;

            if(D_sum == 11) D_aceCount = 1;

            D_draw();

            if(D_sum > 21 && D_aceCount > 0){                          //pickup hole card

                D_aceCount -=1;

                D_sum -=10;

            }

            for (int z = 0; z < 20; z++)

            {                      //draws as many times as necesary

​

               if(D_sum > 21 && D_aceCount > 0){ 

                    D_aceCount -=1;

                    D_sum -=10;

                }

                if(D_sum > 16) break;

                D_draw();

            }

            if(D_sum > 21)playerwins +=1;       //dealer bust                      

            else if(D_sum > P_sum)dealerwins +=1;             // dealer has more

            else if(D_sum < P_sum)playerwins +=1;                //player has more

            else if(D_sum==P_sum)draws+=1;   

        }

       //  Console.WriteLine((playerwins-dealerwins)/1000);

       double playdub = playerwins;

       double calcsum = (playdub-dealerwins)/1000000;

         return(calcsum);

​

    }

    public static void D_draw()

    {

        int r = rnd.Next(deck.Count);

        string card = deck[r];

        deck.RemoveAt(r);

        deckRemoved.Add(card);

        if(card == "A"){

            D_aceCount+=1;

        }

        D_sum += returncard(card);

      //  Console.WriteLine(card);

    }

        public static string P_draw()

    {

​

        int r = rnd.Next(deck.Count);

        string card = deck[r];

        deck.RemoveAt(r);

        deckRemoved.Add(card);

         if(card == "A"){

            P_aceCount+=1;

        }

       // Console.WriteLine(card);

        return card;

    }

    public static int returncard(string card){

        switch (card)

        {

            case "J":

            case "Q":

            case "K":

                return 10;

            case "A":

                return 11; // Or 1,  you'll need to track Aces separately

            default:

                return int.Parse(card);

        }

    }

}

​