some-usable-scripts/haskell/columnv6.hs

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Haskell
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import Data.List as L
main = do content <- getContents
putStr $ unlines $ map unwords $ L.transpose $ map (completeMatrix ' ') $ L.transpose $ completeMatrix "" $ map words $ lines $ content
where completeMatrix v m = map (\e -> e ++ [v| _ <- [length e .. (\ x -> maximum $ map length x) m ]]) m