## LeetCode 232## Impletement Queue using StackclassMyQueue:def__init__(self):self.l1=[]## stack 1 = l1self.l2=[]## stack 2 = l2defpush(self,x:int)->None:## Push x onto queueself.l1.append(x)## The right of the list = the top of the stack = the back of the queuedef...
pushStack) - 1] } } } /** * Your MyQueue object will be instantiated and called as such: * obj := Constructor(); * obj.Push(x); * param_2 := obj.Pop(); * param_3 := obj.Peek(); * param_4 := obj.Empty(); */ 题目链接: Implement Queue using Stacks : leetcode.com/...
* The front element in the stack `inStack` 's queue */privateintfront;/** Initialize your data structure here. */publicMyQueue2(){ inStack =newStack<>(); outStack =newStack<>(); }/** Push element x to the back of queue. */publicvoidpush(intx){if(inStack.empty()) { front ...
* Push element x to the back of queue. *@paramInteger $x *@returnNULL */functionpush($x){while(!$this->empty()) {$this->stack2[] =array_pop($this->stack1); }$this->stack1[] =$x;while(!empty($this->stack2)) {$this->stack1[] =array_pop($this->stack2); } }/** *...
Push element x to the back of queue. :type x: int :rtype: void """ self.stack1.append(x) def dump_data(self): if not self.stack2: while self.stack1: self.stack2.append(self.stack1.pop()) def pop(self): """ Removes the element from in front of queue and returns that elem...
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. ...
shiftStack();if(!_old.empty())return_old.top();return0; }//Return whether the queue is empty.boolempty(void) {return_old.empty() &&_new.empty(); }private: stack<int>_old, _new; }; 用栈来实现队列[LeetCode] Implement Queue using Stacks,如需转载请自行联系原博主。
A classic interview question.This linkhas a nice explanation of the idea using two stacks and its amortized time complexity. I use the same idea in my code, which is as follows. 1classQueue {2public:3//Push element x to the back of queue.4voidpush(intx) {5stack1.push(x);6}78//...
ps:双队列官方题解思路参考:https://leetcode-cn.com/problems/im C 队列 0 175 0 血染信条 ・ 2021.05.19 python list实现栈 解题思路代码 Python3 Python 0 172 0 abel ・ 2021.05.18 用队列实现栈 解题思路思路:正确的思路是,就用一个queue,然后pop,top,empty什么的你就正常调用front和empty,就是...
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