```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 ``` ```\$NumberOfGamblers = 5000 \$RoundsOfBetting = 5000 \$RoundsOfSimulation = 100 \$BetAmount = 10.00 class Gambler def initialize @balance = rand * 5000 # Gambler get 0 - 99.999% of \$5000 @initial = @balance # save the inital balance end def win @balance += \$BetAmount end def lose @balance -= \$BetAmount end def broke @balance <= 0 end def net @balance - @initial end end class Casino < Gambler # casino is a gambler with a very high balance # that never goes broke def initialize @balance = 100_000_000.00 @initial = @balance end def broke false end end def simulateCasino casino = Casino.new gamblers = [] \$NumberOfGamblers.times {gamblers << Gambler.new} \$RoundsOfBetting.times do gamblers.each do |gambler| unless gambler.broke if rand(2) < 1 \$win +=1 casino.lose gambler.win else \$lose+=1 casino.win gambler.lose end end end end gWins = 0 ttlGamblerWins = gamblers.each do |g| gWins += 1 if (g.net > 0) end puts "Casino #{casino.net < 0 ? 'lost' : 'won'} (net:#{casino.net})\n" puts "Winning Gamblers=#{gWins} of #{gamblers.count}\n" return [casino.net,gWins] end casinoWins = 0 \$win = \$lose = 0 totalCasinoNet = 0 losers = 0 winners = 0 \$RoundsOfSimulation.times do net,wins = simulateCasino totalCasinoNet += net casinoWins += 1 if net > 0 losers += \$NumberOfGamblers - wins winners += wins end puts "Casino won #{casinoWins} out of #{\$RoundsOfSimulation} simulations" puts "Casino net:#{totalCasinoNet}\n" puts "total losers:#{losers}\n" puts "total winners:#{winners}\n" puts "percentage of winners:#{(winners.to_f/(winners.to_f+losers.to_f))*100.0}\n" puts "winning bets to losing bets:#{\$win.to_f/\$lose.to_f} (to evaluate overall 'fairness' of simulation bets)" ```