Tag: Stacks
-
LeetCode: 232 Implement Queue using Stacks
•
LeetCode: 232 Implement Queue using Stacks Implement a first in first out (FIFO) queue using only two stacks. The implemented queue should support all the functions of a normal queue (push, pop, peek, empty). push(x) — Pushes element x to the back of the queue. pop() — Removes the element…
-
Algorithms 101: How to implement a queue by using two stacks
•
用栈实现队列 In this problem, we are required to implement a queue using two stacks. The queue should support all four standard operations: push, pop, peek, and empty. 在这个问题中，我们需要使用两个栈来实现一个队列。该队列应支持所有四种标准操作：push、pop、peek 和 empty。 Approach The key idea to implement a queue using two stacks is to use one stack (stack1) to handle incoming…
-
Algorithms 101: Understanding Stacks
•
Definition A Stack is a simple yet powerful data structure used for storing and retrieving data in a Last-In, First-Out (LIFO) manner. This means the last element added to the stack will be the first one to be removed. Key Concepts Push: Add an element to the top of the…