The Martingale Roulette Strategy

# Starting money
money = 500
startingAmount = money
bankAmount = startingAmount * 2
roundNumber = 0
bank = 0

# Bet Parameters
# Starting bet and increase rate
bet = 1
increaseRate = 2
betNumber = 0
totalBet = 0
highestBank = 0

loop do

	lastBank = bank

	loop do
		money = money - bet
		puts "Bet: #{bet}\n"

		#generate spin
		spin = rand(37) 
		if spin < 18
			puts "Spin lands on Black"
			outcome = "black"
		elsif spin >= 18 and spin < 36
			puts "Spin lands on Red"
			outcome = "red"
		elsif spin >= 36
			puts "Spin lands on green"
			outcome = "green"
		end

		totalBet = bet + totalBet
		betNumber = betNumber + 1

		if outcome == "black" or outcome == "green"
			bet = bet * increaseRate
		else
			money = money + bet + bet
			bet = 1
		end

		puts "Total Money: #{money}\n"
		if money > highestBank
			highestBank = money
		end

		if money > bankAmount
			bank = bank + startingAmount
			money = money - startingAmount
			puts "BANK! total in bank = #{bank}\n total in money = #{money}\n"
		end

		if outcome != "red" and money <= 0
			break 
		end
	end	

	if lastBank > bank
		bankAmount = bankAmount * 2
	else
		break
	end
end
print "It took #{betNumber} bets for you to go bankrupt. You have #{bank} in the bank.  You bet a total of #{totalBet} your highest bank roll was #{highestBank}\n"