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feat: add python solution to lc problem: No.0590. N-ary Tree Postorde… #515

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feat: add python solution to lc problem: No.0590. N-ary Tree Postorde… #515

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23 changes: 23 additions & 0 deletions solution/0500-0599/0590.N-ary Tree Postorder Traversal/Solution.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
"""
# Definition for a Node.
class Node:
def __init__(self, val=None, children=None):
self.val = val
self.children = children
"""

class Solution:
def postorder(self, root: 'Node') -> List[int]:
if not root:
return []
def PO(root):
if root==None:
return res
else:
for i in root.children:
PO(i)
res.append(i.val)
res=[]
PO(root)
res.append(root.val)
return res