Data Structures and Algorithms with Python | Free DSA with Python Course - DSA in Python - Top View of Binary Tree | Vertical Line BFS + Hashmap | GFG - Part 114 [Hindi]

🚀 Welcome to Part 114 of Code & Debug’s DSA in Python Course! In this lecture, we solve the Top View of Binary Tree problem from GeeksforGeeks. We use a BFS traversal + hashmap approach to capture the first visible node at every vertical level from the top view. 📚 What you’ll learn in this video: ✅ What is the top view of a binary tree ✅ How to track horizontal distance (line number) ✅ BFS traversal using queue + dictionary ✅ Sorting by keys to produce left-to-right view ✅ Time and space complexity analysis 👉 Practice the problem on GeeksforGeeks: 🔗 https://geeksforgeeks.org/problems/top-view-of-binary-tree/1 👉 Refer to the article for better understanding: 🔗 https://codeanddebug.in/blog/top-view-of-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. #TopViewBinaryTree #BinaryTreeViews #BFS #GFG #PythonDSA #DSAPythonCourse #CodeAndDebug #TreeProblems #CodingInterviews #Part114