Data Structures

Introduction to Queues

A Queue is a linear data structure that models real-world waiting lines. It strictly follows the First-In-First-Out (FIFO) principle.

The Structure

Unlike an array where you can insert or delete anywhere, a Queue restricts you: you can only insert at the back (Rear) and remove from the front (Front).

Real World Mental Model

Think of a drive-thru or a ticket counter. The first car in line is the first one to get their food. Anyone new arriving must go to the very back of the line.

Why use it?

Queues are used when things don't have to be processed immediately, but DO have to be processed in the exact order they arrived (e.g., printer spools, network packets, web server requests).

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Data Structures

Introduction to Queues

A Queue is a linear data structure that models real-world waiting lines. It strictly follows the First-In-First-Out (FIFO) principle.

The Structure

Unlike an array where you can insert or delete anywhere, a Queue restricts you: you can only insert at the back (Rear) and remove from the front (Front).

Real World Mental Model

Think of a drive-thru or a ticket counter. The first car in line is the first one to get their food. Anyone new arriving must go to the very back of the line.

Why use it?

Queues are used when things don't have to be processed immediately, but DO have to be processed in the exact order they arrived (e.g., printer spools, network packets, web server requests).

Introduction To Queue

Introduction To Queue

Introduction to Queues

The Structure

Real World Mental Model

Why use it?

Introduction to Queues

The Structure

Real World Mental Model

Why use it?