题解 | #用两个栈实现队列# | Python
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):
self.stack1.append(node)
def pop(self):
ans = self.stack1[0]
self.stack1 = self.stack1[1:]
return ans
