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c17 otter-dianam #93

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c17 otter-dianam #93

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12 changes: 11 additions & 1 deletion binary_search_trees/array_to_bst.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,4 +10,14 @@ def arr_to_bst(arr):
Balanced Binary Search Tree using the elements in the array.
Return the root of the Binary Search Tree.
"""
pass
if not arr:
return None

mid = (len(arr)) // 2

root = TreeNode(arr[mid])

root.left = arr_to_bst(arr[:mid])

root.right = arr_to_bst(arr[mid+1:])
return root