DSA Python 2025 - Check if Binary Tree is Height Balanced | Optimized DFS - Part 112 [Hindi]

🚀 Welcome to Part 112 of Code & Debug’s DSA Python Course 2025! In this lecture, we solve Leetcode 110: Balanced Binary Tree, where we determine whether a given binary tree is height-balanced or not. We use an efficient DFS-based solution that avoids repeated computations by returning -1 on imbalance. 📚 What you’ll learn in this video: ✅ What is a height-balanced binary tree? ✅ Optimized postorder DFS approach to calculate height and balance in one go ✅ Use of -1 as a sentinel value to short-circuit recursion ✅ Step-by-step Python implementation with dry run ✅ Time and space complexity analysis 💡 Why is this important? This is a frequently asked interview problem that tests your understanding of recursive tree traversal and height calculation, and how to combine them efficiently. It’s also a foundational concept for AVL trees, balanced BSTs, and dynamic tree problems. 👉 Practice the problem on Leetcode: 🔗 https://leetcode.com/problems/balanced-binary-tree/ 👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order): 🔗 https://docs.google.com/spreadsheets/d/1AWE15Fy3wD2iqu2vjK_R7cCiuvSsjYQclcdZmHpF66o/edit?usp=sharing 👉 Enroll in this FREE DSA Python course here: 🔗 https://codeanddebug.in/course/master-dsa-with-leetcode 👉 Enroll for Self-Paced Advanced DSA course here: 🔗 https://codeanddebug.in/course/zero-to-hero-python-dsa 🙏 Thank you for supporting Code & Debug! Don’t forget to like, share, and subscribe to our channel. Hit the 🔔 bell icon to stay updated with our latest lectures. #BalancedBinaryTree #DFS #HeightBalanced #BinaryTree #Leetcode110 #PythonDSA #DSAPythonCourse #CodeAndDebug #DSA2025 #CodingInterviews #Part112