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/gist:9be20569fd1913e5a6fc Secret

Created January 25, 2016 00:28
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gistfile1.txt
def bulls_cows_match(secret, guess)
sa, ga = *[secret, guess].map(&:chars)
[bulls = ga.zip(sa).select { |f, s| f == s }.size, (ga & sa).size - bulls].zip('AB'.chars).join
end
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