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Update trie_postorder.py

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bt3gl 2023-08-08 17:01:53 -07:00 committed by GitHub
parent a97c06f579
commit 728b441734
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1 changed files with 4 additions and 1 deletions
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tries/trie_postorder.py
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@ -3,7 +3,7 @@
# author: bt3gl # author: bt3gl
def postorder(self, root: 'Node') -> List[int]: def postorder(self, root: 'Node'):
if root is None: if root is None:
return [] return []
@ -11,9 +11,12 @@ def postorder(self, root: 'Node') -> List[int]:
stack, result = [root, ], [] stack, result = [root, ], []
while stack: while stack:
node = stack.pop() node = stack.pop()
if node is not None: if node is not None:
result.append(node.val) result.append(node.val)
for c in node.children: for c in node.children:
stack.append(c) stack.append(c)