September 2017 Update
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Task/Identity-matrix/Haskell/identity-matrix-4.hs
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Task/Identity-matrix/Haskell/identity-matrix-4.hs
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idMatrix :: Int -> [[Int]]
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idMatrix n =
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let xs = [1 .. n]
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in xs >>= \x -> [xs >>= \y -> [fromEnum (x == y)]]
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main :: IO ()
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main = (putStr . unlines) $ fmap (unwords . fmap show) (idMatrix 5)
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