AVL Tree, AVL Tree Insertion and Rotations Explained with Visual Examples

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In this video, we dive deep into AVL Tree in data structure (AVL Tree Insertion, AVL Tree Rotations), a powerful type of self-balancing binary search tree!

We start by understanding the problems of unbalanced BSTs during insertion and deletion. Then, we explore what a balanced tree looks like and why balance is crucial for fast search operations.

You'll learn the core idea behind AVL Trees and how they automatically rebalance themselves after insertions or deletions using rotations — including Left-Left (LL), Right-Right (RR), Left-Right (LR), and Right-Left (RL) cases, explained step-by-step with clear examples.

🚀 Whether you’re preparing for coding interviews, DSA exams, or just want to strengthen your data structures knowledge, this complete guide on AVL Trees will make it crystal clear for you!

👉 Topics Covered:

Problems in Binary Search Trees (BST)

What is a Balanced Tree?

Introduction to AVL Trees & Idea of AVL tree self balancing using balance factor

AVL Tree Rotations Explained In-Depth

Examples of AVL Balancing

📌 Timestamps:
00:00 Problems with BST & Intro to AVL Tree
03:35 AVL Tree Balance Factor
05:11 Idea Behind Self Balancing in AVL Tree
11:47 Situations That Trigger AVL Tree Rotations
15:00 Right Rotation to Solve Left-Left Situation
18:50 Right Rotation Example
22:33 Left Rotation to Solve Right-Right Situation
24:44 Left Rotation Example
28:08 Left-Right Rotation to Solve Left-Right Situation
33:57 Left-Right Rotation Example
36:55 Right-Left Rotation to Solve Right-Left Situation
43:20 Right-Left Rotation Example
47:01 Summary

💬 Drop your questions or feedback in the comments! Don’t forget to Like 👍, Subscribe 🔔, and Share with your friends learning DSA!

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Comment if this helped to understand balanced tree concept and how AVL tree helps, If there are any doubts / question please let me know

Question: is AVL tree suitable for use cases with heavy insertion / deletion?

LearnWithDnyanesh

This video explained a difficult AVL tree concept in a very simple way and cleared all my doubts around AVL tree rotations and self balancing

DailySiyappa-

Enjoy your teaching style, all things to the point. Great content.

AbhijitChavan

Such a clear and simple explanation for students! The way you broke down AVL tree rotations made it so easy to understand. Keep up the amazing work — looking forward to more videos on data structures!

RahulPatil-iotr

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