代码(Python3) classMyQueue:def__init__(self):# push 栈维护已放入的元素self.push_stack:List[int]=[]# pop 栈维护待移除的元素。# 将 push 栈中的元素放入 pop 栈时,就将先进后出转换为了先进先出self.pop_stack:List[int]=[]defpush(self,x:int)->None:self.push_stack.append(x)defpop(sel...
1 读题 LeetCode 232E 用栈实现队列 Implement Queue using Stacks 2 Python 解题 正如咱们前面那个问题,list 既可以实现栈,还能实现列表,所以咱这题的代码,和那个队列模拟栈的就很类似了。 ## LeetCode 232## Impletement Queue using StackclassMyQueue:def__init__(self):self.l1=[]## stack 1 = l1se...
class Queue(object): def __init__(self): """ initialize your data structure here. """ self.inStack=[] self.outStack=[] def push(self, x): """ :type x: int :rtype: nothing """ self.inStack.append(x) def pop(self): """ :rtype: nothing """ self.peek() self.outStack....
链接:https://leetcode-cn.com/problems/implement-queue-using-stacks/solution/yong-zhan-shi-xian-dui-lie-by-leetcode-s-xnb6/ python # 0232.栈实现队列 """ """ classMyQueue: def__init__(self): # in -> push, out -> pop self.stack_in = [] self.stack_out = [] defpush(self,x:...
232. Implement Queue using Stacks 题目: https://leetcode.com/problems/implement-queue-using-stacks/ 难度: Easy 这个题没有乖乖听话,因为当年做过用两个stack来模拟queue 然后不得不说,我Python大法实在太厉害了 这功能强大的,我简直要啧啧啧 classQueue(object):def__init__(self):""" ...
class MyQueue: def __init__(self): self.stack_in = [] self.stack_out = [] def push(self, x: int) -> None: self.stack_in.append(x) def pop(self) -> int: if self.empty(): return None if self.stack_out: return self.stack_out.pop() ...
Typically, the last person to arrive will stand at the end of the queue. The person at the beginning of the queue will leave it as soon as a table is available. Here’s how you can emulate the process using a bare-bones deque object: Python >>> from collections import deque >>> ...
题目链接 https://leetcode-cn.com/problems/implement-queue-using-stacks/ 题目描述 使用栈实现队列的下列操作: push(x) -- 将一个元素放入队列的尾部...queue.push(1); queue.push(2); queue.peek(); // 返回 1 queue.pop(); // 返回 1 queue.empty(); // 返回 false 思路 使用两个栈来完成...
Implement the following operations of a queue using stacks. push(x) – Push element x to the back of queue. pop() – Removes the element from in front of queue. peek() – Get the front element. empty() – Return whether the queue is empty. ...
Depending on your language, queue may not be supported natively. You may simulate a queue by using a list or deque (double-ended queue), as long as you use only standard operations of a queue. You may assume that all operations are valid (for example, no pop or top operations will be...