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Update preorder_traversal_iii.

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krahets
2023-07-25 16:39:38 +08:00
parent 90af225dae
commit b067016bfa
20 changed files with 48 additions and 56 deletions
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11
codes/python/modules/tree_node.py
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@ -67,14 +67,3 @@ def tree_to_list(root: TreeNode | None) -> list[int]:
res = []
tree_to_list_dfs(root, 0, res)
return res
def get_tree_node(root: TreeNode | None, val: int) -> TreeNode | None:
"""Get a tree node with specific value in a binary tree"""
if not root:
return
if root.val == val:
return root
left: TreeNode | None = get_tree_node(root.left, val)
right: TreeNode | None = get_tree_node(root.right, val)
return left if left else right