13 lines
233 B
Haskell
13 lines
233 B
Haskell
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import Data.Tree (Tree(..), drawTree)
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tree :: Tree Int
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tree =
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Node
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1
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[ Node 2 [Node 4 [Node 7 []], Node 5 []]
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, Node 3 [Node 6 [Node 8 [], Node 9 []]]
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]
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main :: IO ()
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main = (putStrLn . drawTree . fmap show) tree
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