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Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
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Task/Non-continuous-subsequences/Haskell/non-continuous-subsequences-4.hs Normal file
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import Data.List (subsequences, tails, delete)
disjoint a = concatMap (cutAt a) [1..length a - 2] where
cutAt s n = [a ++ b | b <- delete [] (subsequences right),
a <- init (tails left) ] where
(left, _:right) = splitAt n s
main = print $ length $ disjoint [1..20]