29 lines
1.0 KiB
Haskell
29 lines
1.0 KiB
Haskell
module Commons where
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import Data.List.Utils (split)
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import GHC.IO.Handle (isEOF)
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data Card = Card { cid :: Int, nCopies :: Int, winningNumbers :: [Int], numbers :: [Int] } deriving (Show)
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parseNumbers :: String -> [Int]
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parseNumbers [] = []
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parseNumbers (' ': n1: n2: t) = read [n1, n2]: parseNumbers t
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parseCard :: String -> Card
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parseCard ('C': 'a': 'r': 'd': ' ': i1: i2: i3: ':': t) = let (rawWN: rawN: _) = split " |" t
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in Card {cid = read [i1, i2, i3],
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nCopies = 1,
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winningNumbers = parseNumbers rawWN,
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numbers = parseNumbers rawN}
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parse :: IO [Card]
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parse = do done <- isEOF
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if done
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then return []
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else do line <- getLine
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let card = parseCard line
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otherCards <- parse
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return (card: otherCards)
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