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Um contador de palavras numa frase em Haskell
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| import Data.List | |
| frase = "vaca batata galinha batata coxinha macaco batata vaca batata" | |
| wordCounter frase = | |
| nub $ map (\x -> (x, length $ filter (== x) palavras)) palavras | |
| where palavras = words frase | |
| -- [("vaca",2),("batata",4),("galinha",1),("coxinha",1),("macaco",1)] |
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