self.q.put(self.top_element)returnself.q.get()deftop(self) ->int:returnself.top_elementdefempty(self) ->bool:returnself.q.qsize() == 0 1classMyStack {2private: queue<int>q;3public:4/** Initialize your data structure here.*/5MyStack() {67}89/** Push element x onto stack.*/...
class Stack { public: // Push element x onto stack. void push(int x) { if(q1.empty()&&q2.empty()) q1.push(x); else if(!q1.empty()) q1.push(x); else q2.push(x); } // Removes the element on top of the stack. void pop() { if(!q1.empty()) { while(q1.size()!=1...
使用队列实现栈的下列操作: push(x) – 元素x入栈 pop() – 移除栈顶元素 top.../implement-stack-using-queues/description/ 用双队列实现栈:两个队列倒换数据 入栈的时候 出栈的时候 删除之后 入栈 队列的实现 用双队列实现栈 ...
x:int)->None:## Push x onto stackself.l1.append(x)## The right of the list = the top of the stack = the back of the queuedefpop(self)->int:## pop 抽取## Removes the top element and returnifself.l1:whilelen(self.l1)>1:self.l2.append(...
【LeetCode题解】232_用栈实现队列(Implement-Queue-using-Stacks) 目录 描述 解法一:在一个栈中维持所有元素的出队顺序 思路 入队(push) 出队(pop) 查看队首(peek) 是否为空(empty) Java 实现 Python 实现 解法二:一个栈入,一个栈出 思路 入队(push) 出队(pop) 查看队首(peek) 是否为空(empty) ...
classMyStack{Queue<Integer>queue;/** Initialize your data structure here. */publicMyStack(){queue=newLinkedList<>();}/** Push element x onto stack. */publicvoidpush(intx){queue.offer(x);}/** Removes the element on top of the stack and returns that element. */publicintpop(){intsize...
leetcode225 implement stack using queues 题目要求 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....
LeetCode 225. Implement Stack using Queues 简介:使用队列实现栈的下列操作:push(x) -- 元素 x 入栈;pop() -- 移除栈顶元素;top() -- 获取栈顶元素;empty() -- 返回栈是否为空 Description Implement the following operations of a stack using queues....
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.
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.