Data Structures and Algorithms with Python | Free DSA with Python Course - DSA in Python - Leetcode 142: Linked List Cycle II | Find the Cycle Starting Point - Part 60 [Hindi]

🚀 Welcome to Part 60 of Code & Debug’s DSA in Python Course! In this video, we solve Leetcode 142: Linked List Cycle II, where we not only detect a cycle but also find the starting node of the cycle using Floyd’s Cycle Detection Algorithm (Tortoise and Hare method). 📚 What you’ll learn in this video: ✅ Understanding the problem statement and constraints ✅ Floyd’s Cycle Detection Algorithm (Tortoise and Hare Approach) explained ✅ How to find the cycle's starting node after detection ✅ Time complexity: O(n), Space complexity: O(1) ✅ Step-by-step Python implementation with detailed dry run ✅ Handling edge cases like empty lists and single-node loops 💡 Why is this problem important? This problem builds on cycle detection techniques and helps in solving advanced problems like intersection of linked lists, loop removal, and network pathfinding algorithms. It’s a frequently asked question in FAANG interviews. 👉 Link to solve this question: https://leetcode.com/problems/linked-list-cycle-ii/description/ 👉 Refer the article below for better understanding: https://codeanddebug.in/blog/linked-list-cycle-ii-leetcode-142/ 👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order): 🔗 https://docs.google.com/spreadsheets/d/1AWE15Fy3wD2iqu2vjK_R7cCiuvSsjYQclcdZmHpF66o/edit?usp=sharing 👉 Enroll in the free DSA Python course here: https://codeanddebug.in/course/master-dsa-with-leetcode 👉 Enroll for Self-Paced Advance 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. #LinkedList #Leetcode142 #LinkedListCycleII #FindCycleStart #FloydCycleDetection #DSAPythonCourse #PythonDSA #CodeAndDebug #LearnPython #CodingInterviews #Part60