python3题解 | #用两个栈实现队列#
用两个栈实现队列
https://www.nowcoder.com/practice/54275ddae22f475981afa2244dd448c6
# -*- coding:utf-8 -*-
class Solution:
def __init__(self):
self.stack1 = []
self.stack2 = []
def push(self, node):
# write code here
self.stack1.append(node)
def pop(self):
# return xx
self.stack2.append(self.stack1[0])
self.stack1.remove(self.stack1[0])
return self.stack2.pop()
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