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flou/puzzle.rb

Created June 19, 2015 19:49
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puzzle.rb
formula = "%d.0 + 13 * %d.0 / %d.0 + %d.0 + 12 * %d.0 - %d.0 - 11 + %d.0 * %d.0 / %d.0 - 10"
combinations = (1..9).to_a.permutation.map(&:join)
combinations.each do |combination|
expr = format(formula, *combination.split(''))
result = eval(expr)
puts expr.gsub(/\.0/, '') if result == 66.0
end
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