What is Stack Data Structure? A Complete Tutorial

Stack Data Structure

Last Updated : 27 Mar, 2025

A Stack is a linear data structure that follows a particular order in which the operations are performed. The order may be LIFO(Last In First Out) or FILO(First In Last Out). LIFO implies that the element that is inserted last, comes out first and FILO implies that the element that is inserted first, comes out last.

It behaves like a stack of plates, where the last plate added is the first one to be removed. Think of it this way:

Pushing an element onto the stack is like adding a new plate on top.
Popping an element removes the top plate from the stack.

Basics of Stack Data Structure

Implementations of Stack in Different Languages

Easy Problems on Stack Data Structures

Medium Problems on Stack Data Structures

Hard Problems on Stack Data Structures

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