Скачать или смотреть The Secret Behind "Undo" - How Stack Actually Works?

This content introduces the Stack Abstract Data Type (ADT), a foundational concept in computer science characterized by the Last-In, First-Out (LIFO) principle, meaning the most recently added item is the first to be removed. The core operations of a stack—push, pop, and peek—are defined and shown to be crucial for applications like managing function calls (the call stack) and implementing undo/redo functionality in software. The material compares two primary methods for implementation: the flexible, dynamic linked-list-based stack and the simpler, often faster array-based stack (using Python lists), with both offering efficient O(1) performance for key operations. I hope you enjoy the video. Thanks.