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seanhandley/permutation.rb

Created November 15, 2015 11:42
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Einstein 16: Permutation
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permutation.rb
def q(a)
a.permutation
end
q([1,2,3]).to_a # => [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
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