#stack

Stacks

Introduction A stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle. Think of it like a stack of plates: you can only add or remove plates from the top. The last plate you place on the stack is the first one you’ll take off. Stacks are fundamental in computer science and appear everywhere—from the call stack that tracks function calls in your program to undo/redo functionality in text editors. Read more →

November 19, 2025