作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/implement-stack-using-queues/#/description 题目描述 Implement the following operations of a stack using queues. push(x) – Push element x onto…

题目: Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -- Get the top element. empty() -- Return whether the stack is empty. Notes: You must use on…

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用队列实现栈.这个实现方法十分的简单,就是在push这一步的时候直接变成逆序. class MyStack { private: queue<int> q; queue<int> q2; public: /** Initialize your data structure here. */ MyStack() { } /** Push element x onto stack. */ void push(int x) { q.push(x); ;i<q.size()-;i++…

#-*- coding: UTF-8 -*-class Stack(object):    def __init__(self):        """        initialize your data structure here.        """        self.inQueue=[]        self.outQueue=[]    def push(self, x):        """…

155. Min Stack class MinStack { public: /** initialize your data structure here. */ MinStack() { } void push(int x) { if(s1.empty() && s2.empty()){ s1.push(x); s2.push(x); } else{ if(x < s2.top()){ s1.push(x); s2.push(x); } else{ s1.push(x); s2…

232. Implement Queue using Stacks Total Accepted: 27024 Total Submissions: 79793 Difficulty: Easy 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 o…

翻译 用队列来实现栈的例如以下操作. push(x) -- 将元素x加入进栈 pop() -- 从栈顶移除元素 top() -- 返回栈顶元素 empty() -- 返回栈是否为空 注意: 你必须使用一个仅仅有标准操作的队列. 也就是说,仅仅有push/pop/size/empty等操作是有效的. 队列可能不被原生支持.这取决于你所用的语言. 仅仅要你仅仅是用queue的标准操作,你能够用list或者deque(double-ended queue)来模拟队列. 你能够如果全部的操作都是有效的(…

Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -- Get the top element. empty() -- Return whether the stack is empty. Notes: You may assume that…

Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -- Get the top element. empty() -- Return whether the stack is empty. Notes: You must use only s…