To prove safety offer_ binary tree binary tree _ a mirror - Code World

To prove safety offer_ binary tree binary tree _ a mirror

Others 2020-03-31 21:45:13 views: null

Binary Tree Mirror

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# -*- coding:utf-8 -*-
# class TreeNode:
#     def __init__(self, x):
#         self.val = x
#         self.left = None
#         self.right = None
class Solution:
    # 返回镜像树的根节点
    # 方式1：生成新的镜像二叉树
    def Mirror(self, root):
        if root == None:
            return
        root.left, root.right = root.right, root.left
        self.Mirror(root.left)
        self.Mirror(root.right)
        return root

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