18 lines
392 B
Haskell
18 lines
392 B
Haskell
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import Data.List
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import Data.List.Split
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main = do
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print (day4 p $ range "130254-678275")
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print (day4 p' $ range "130254-678275")
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range :: String -> [Int]
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range input = [a..b] where [a,b] = map read $ splitOn "-" input
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day4 p = sum . map (fromEnum . p . show)
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p x | sort x /= x = False
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| nub x == x = False
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| otherwise = True
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p' x = 2 `elem` (map length $ group x) && p x
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