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>>> import Data.List >>> permutations [1,2,3] [[1,2,3],[2,1,3],[3,2,1],[2,3,1],[3,1,2],[1,3,2]] comb :: Int -> [a] -> [[a]] comb 0 xs = [[]] comb _ [] = [] comb n (x:xs) = [x:y | y <- comb (n-1) xs] ++ comb n xs >>> import Control.Monad >>> replicateM 5 ["a", "b", "c"] [["a","a","a","a","a"],["a","a","a","a","b"],["a","a","a","a","c"],["a","a","a","b","a"],["a","a","a","b","b"],["a","a","a","b","c
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clojure/math.combinatorics · GitHub - tnoda-clojure
itertoolsã«ã‚ˆã‚‹é †åˆ—ã€çµ„ã¿åˆã‚ã›ã€ç›´ç©ã®ãŠå‹‰å¼· - Qiita
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