classMyQueue{privateStack<Integer> s1;privateStack<Integer> s2;/** Initialize your data structure here. */publicMyQueue(){ s1 =newStack<>(); s2 =newStack<>(); }/** Push element x to the back of queue. */publicv
Stack_1.push(x); }/** Removes the element from in front of queue and returns that element. */publicintpop(){//如果栈2是空的if(Stack_2.isEmpty()){//将栈1的所有元素入栈2while(!Stack_1.isEmpty()){ Stack_2.push(Stack_1.pop()); } }if(!Stack_2.isEmpty()) {returnStack_2....
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. Notes: You must use only standard oper...
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. Example: MyQueue queue = new MyQueue();...
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 Stack class MyQueue: def __init__(self): self.l1 = [] ## st...
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. ...
public class MyQueue { Stack<Integer> s1; Stack<Integer> s2; public MyQueue() { s1 = new Stack(); s2 = new Stack(); } /** Push element x to the back of queue. */ public void push(int x) { s1.push(x); } /** Removes the element from in front of queue and returns that...
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。
232. Implement Queue using Stacks Java Solutions 2016-05-02 20:36 − ... Miller1991 0 139 相关推荐 [Java数据结构]Queue 2019-12-25 08:47 − Queue扩展了Collection,它添加了支持根据先进先出FIFO原则对元素排序的方法。 当对Queue调用add和offer方法时,元素始终添加在Queue的末尾;要检索一个元素...
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//...