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feat(haskell): add counting duplicates

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Dmitriy Pleshevskiy 2021-10-28 23:50:42 +03:00
parent 2e43ff0c6b
commit 069972f5d5
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haskell/2_counting_duplicates.hs Normal file
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import Data.List(group, sort)
import Data.Char(toLower)
duplicateCount :: String -> Int
duplicateCount = length . filter ((>1) . length) . group . sort . map toLower