leetcode232

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[Swift]LeetCode232. 用栈实现队列 | Implement Queue using Stacks

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: M…

【LeetCode232】 Implement Queue using Stacks★

1.题目描述 2.思路思路简单,这里用一个图来举例说明: 3.java代码 public class MyQueue { Stack<Integer> stack1=new Stack<Integer>(); Stack<Integer> stack2=new Stack<Integer>(); /** Push element x to the back of queue. */ public void push(int x) { stack1.push…

public class MyQueue { Stack<int> S = new Stack<int>(); /** Initialize your data structure here. */ public MyQueue() { } /** Push element x to the back of queue. */ public void Push(int x) { S.Push(x); } /** Removes the element from in front o…

LeetCode232:Implement Queue using Stacks

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 mus…

LeetCode232 Implement Queue using Stacks Java 题解

题目: 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:…

LeetCode232 用栈实现队列

使用栈实现队列的下列操作: push(x) -- 将一个元素放入队列的尾部. pop() -- 从队列首部移除元素. peek() -- 返回队列首部的元素. empty() -- 返回队列是否为空. 示例: MyQueue queue = new MyQueue(); queue.push(1); queue.push(2); queue.peek(); // 返回 1 queue.pop(); // 返回 1 queue.empty(); // 返回 false 说明: 你只能使用标准的栈操…