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Daily Crap 2009-12-15

  1. # hey, it's ruby tiiiiime

def roll_one
  rand(6) + 1
end

def roll prev_square = 0, num_doubles = 0
  roll1, roll2 = roll_one, roll_one
  if roll1 == roll2 && num_doubles == 0
    [prev_square + roll1 + roll2] + roll(prev_square + roll1 + roll2, num_doubles + 1)
  else
    [prev_square + roll1 + roll2]
  end
end

times = 1000000

counts = []
times.times do
  roll.each do |s|
    if counts[s]
      counts[s] += 1
    else
      counts[s] = 1
    end
  end
end

puts "Monopoly roll probabilities"
counts.each_with_index do |c, i|
  puts "chances of rolling #{i}\t#{(c || 0).to_f / times * 100.0} %"
end

Posted Dec 15, 2009, in the night.

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