Queue Data Structure in DSA One Shot | FIFO & Types Explained With Examples | upGrad Learning
In this video, we cover the Queue Data Structure in DSA (Data Structures and Algorithms) in a complete and easy-to-understand way. This Queue in Data Structures tutorial is designed for beginners who want to master core DSA concepts with clear explanations and real-life examples.
You will learn everything about the Queue Data Structure, including the FIFO (First In First Out) principle, and how it works in real-world scenarios like ticket booking systems, airport boarding, and task scheduling.
This DSA Queue tutorial will help you build a strong foundation in Data Structures using Queue, which is essential for coding interviews, competitive programming, and Java or C++ programming fundamentals.
By the end of this lecture, you will clearly understand how the Queue Data Structure works in DSA, how FIFO logic is implemented, and how queues are used in real-world software systems.
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Following are the concepts covered in this video :
00:00 – Introduction to Queue Data Structure in DSA
00:33 – Definition of Queue & FIFO Principle
01:09 – Difference Between Stack and Queue
01:46 – Real-Life Queue Example (Store Line)
02:22 – Understanding Front and Rear in Queue
03:04 – Queue Insertion and Deletion Process
04:27 – Cinema Ticket Line Example for Queue
05:02 – Basic Queue Operations Overview
05:46 – Enqueue Operation Explained
06:32 – Dequeue Operation Explained
07:14 – Peek Operation in Queue
08:04 – Empty Operation Explained
08:50 – Queue Implementation in Java
09:27 – Introduction to Types of Queue
10:08 – Simple Queue Explained
11:02 – Priority Queue Introduction
11:41 – Hospital Emergency Example for Priority Queue
14:10 – Double Ended Queue (Deque) Explained
16:45 – Circular Queue Explained
19:49 – Real-World Airport Boarding Example
21:20 – Queue Implementation Using Arrays, Linked List & Stack
21:55 – Implementing Queue Using Two Stacks
24:46 – Complete Revision of Queue Concepts
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