What is Queue in Python? A queue is an abstract data type used for storing and managing data in a specific order. It has a rear (where elements are added) and a front (where elements are removed). Queues can be
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 = [] ## sta...
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(...
MyQueue myQueue = new MyQueue(); myQueue.push(1); // queue is: [1] myQueue.push(2); // queue is: [1, 2] (leftmost is front of the queue) myQueue.peek(); // return 1 myQueue.pop(); // return 1, queue is [2] myQueue.empty(); // return false 提示: 1 <= x <=...
class Queue(object): def __init__(self): """ initialize your data structure here. """ self.inStack=[] self.outStack=[] def push(self, x): """ :type x: int :rtype: nothing """ self.inStack.append(x) def pop(self): ...
【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) Java...
Python解法 Java解法 日期 [LeetCode] 题目地址:https://leetcode.com/problems/implement-queue-using-stacks/ Total Accepted: 42648 Total Submissions: 125482 Difficulty: Easy 题目描述 Implement the following operations of a queue using stacks.
【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) ...
queue.LifoQueue Using list to Create a Python Stack The built-in list structure that you likely use frequently in your programs can be used as a stack. Instead of .push(), you can use .append() to add new elements to the top of your stack, while .pop() removes the elements in the...
A binary heap is a specialized tree-based data structure that satisfies the heap property, where the key of each node is either greater than or equal to (in a max heap) or less than or equal to (in a min heap) the keys of its children. In this program, we utilize a linked list ...