Permutations: Difference between revisions
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// permutations :: [a] -> [[a]] |
// permutations :: [a] -> [[a]] |
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var permutations = function (xs) { |
var permutations = function (xs) { |
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return xs.length ? concatMap(function (x) { |
return xs.length ? concatMap(function (x) { |
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