using System;

​

public class Roulette

{

    private const double minbet = 1;

    private const double maxbet = 10000;

    public double wallet = 10000;

    public double nextbet = 1;

    private Random rnd = new Random();

    public bool playRound()

    {

        // not enough money for optimal betsize, all-in next round.

        if (wallet < nextbet)

        {

            nextbet = wallet;

        }

        wallet -= nextbet;

​

        // empty wallet.

        if (wallet < 0 || nextbet == 0) return false;

        int number = rnd.Next(0, 36);

        // winning bet, add bet*2 to wallet and set nextbet back to minimum.

        if (number > 18)

        {

            wallet += nextbet * 2;

            nextbet = minbet;

        }

        // losing bet, double nextbet until maxbet reach.

        else

        {

            nextbet *= 2;

            if (nextbet > maxbet)

            {

                nextbet = maxbet;

            }

        }

        return true;

    }

}

​

public class Program

{

    public static void Main()

    {

        int i = 0;

        long countAvg = 0;

        // iterate 1000 times.

        while (i++ < 1000)

        {

            // play until go broke.

            int count = 0;

            Roulette game = new Roulette();

            while (game.playRound())

            {

                count++;

            }

            System.Console.WriteLine("Went broke after " + count + " rounds.");

            countAvg += count;

        }

        System.Console.WriteLine("On average you went broke after " + countAvg / i + " rounds.");

    }

}