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목록Serialize and Deserialize Binary Tree (1)
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LeetCode: 297. Serialize and Deserialize Binary Tree
My somewhat complicated code using queue. Both time and memory complexities are O(N). # Definition for a binary tree node. # class TreeNode(object): # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Codec: def serialize(self, root): """Encodes a tree to a single string. :type root: TreeNode :rtype: str """ if not root: return '' ret = str(root.val) + ' ' q = [r..
Computer Science/Coding Test
2022. 1. 2. 19:08