LeetCode 752 Explained | Open the Lock | BFS Step-by-Step | Medium

In this video, we solve LeetCode problem 752 — Open the Lock together 🔐 We start by understanding the problem, then walk through the thought process step by step before implementing the solution. Along the way, we discuss why Breadth-First Search (BFS) is the right approach, how to model the lock combinations as states, and how to avoid common mistakes using visited tracking. This problem is a great example of how to recognize graph problems disguised as string or array problems, and how BFS helps us find the minimum number of moves efficiently. What you’ll learn in this video: How to model lock combinations as graph states Why BFS guarantees the shortest path How to handle deadends correctly Common pitfalls in LeetCode 752 A clean, interview-ready solution 👍 If you found this helpful, like the video 💬 Comment which problem we should solve together next 🔔 Subscribe for more LeetCode walkthroughs and problem-solving sessions Contact info: [email protected]