3. Using object or Map An object is another built-in data structure in JavaScript that can store key-value pairs of any type. An object can be used to implement a queue by using a property to store the size of the queue, and another property to store the elements as a nested object...
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. */publicvoidpush(intx){while(!s1.isEmpty()) { s2.push(s1.pop()); } s...
importjava.util.Stack;classMyQueue{//初始化栈1和栈2privateStack<Integer> Stack_1;privateStack<Integer> Stack_2;/** Initialize your data structure here. */publicMyQueue(){ Stack_1 =newStack<>(); Stack_2 =newStack<>(); }//进入第一个栈/** Push element x to the back of queue. */...
Implement Queue using Stacks Problem: 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 elemen......
1. Using an array One way to implement a deque in JavaScript is to use an array and implement all the standard queue operations like addFront(), addBack(), removeFront(), and removeBack(). However, using an array as the underlying data structure means that the deque has a fixed capaci...
import java.util.Stack; /** * Created by clearbug on 2018/4/5. * * 这只是最普通最简单的一种方法实现,官方答案里面的第二种方法真不错,整体上提高了时间效率! */ public class MyQueue { private Stack<Integer> stack1; private Stack<Integer> stack2; /** Initialize your data structure here...
Implement Queue using Stacks 链接:https://leetcode.com/problems/implement-queue-using-stacks/ 思路 使用两个栈,stk1用作主要存储。假设已经往stk1里push一些元素,现在要pop,即取栈底的元素,则把上面的元素暂存到stk2里再取栈底。此时把stk2元素放回stk1可恢复原来的顺序,但是,如果下个操作还是pop,此时...
2. Using Queue to implement Stack If it is tricky to use 2 stacks to implement a queue, then using queue to implement stack is much more straightforward, requiring only one queue as the basic data structure. First, the API of stack are as follows: ...
1/**2* Initialize your data structure here.3*/4varMyQueue =function() {5this.first =[];6this.second =[];7};89/**10* Push element x to the back of queue.11* @param {number} x12* @return {void}13*/14MyQueue.prototype.push =function(x) {15this.first.push(x);16};1718/**...
题目链接:https://leetcode.com/problems/implement queue using stacks/ 可以用两个栈 inStack,outStack 来实现一个队列 inS