qq_27816469的博客

# -*- coding:utf-8 -*- class Solution: def IsPopOrder(self, pushV, popV): if pushV == [] or popV == [] or len(pushV) != len(popV): return False; st = [];

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: # 返回从上到下每个节点值列表，例：[1,2,3] de