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22 lines
516 B
Idris
22 lines
516 B
Idris
module BTree
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public export
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data BTree a = Leaf
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| Node (BTree a) a (BTree a)
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export
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insert : Ord a => a -> BTree a -> BTree a
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insert x Leaf = Node Leaf x Leaf
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insert x (Node l v r) = if (x < v) then (Node (insert x l) v r)
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else (Node l v (insert x r))
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export
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toList : BTree a -> List a
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toList Leaf = []
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toList (Node l v r) = BTree.toList l ++ (v :: BTree.toList r)
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export
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toTree : Ord a => List a -> BTree a
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toTree [] = Leaf
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toTree (x :: xs) = insert x (toTree xs)
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