LeetCode 909: Snakes and Ladders | CSharp Solution | BFS

📝 *Problem Overview* Solve the classic Snakes and Ladders game puzzle using #breadthfirstsearch to find the minimum number of moves required to reach the end of the board. #graphalgorithms #bfs ⏱️ *Complexity* Time Complexity: O(n²) where n² is the total number of cells on the board Space Complexity: O(n²) for the queue and visited set ⌛ *Timestamps* 00:00 - Understanding problems statement 02:01 - Brute force approach 05:25 - Optimized approach - BFS + Queue 06:11 - Dry run 07:44 - Big O Notation calculated 11:49 - C# code walk-through 14:18 - Solution analysis - runtime + memory 14:26 - Conclusion 🎯 *Key Concepts* Breadth-First Search (BFS) Matrix traversal with special numbering Graph representation of game boards Converting between 1D and 2D coordinates Shortest path algorithms 💡 *Learning Points* How to convert Snakes and Ladders game into a graph problem Implementing BFS to find shortest paths Efficiently handling coordinate conversions in a boustrophedon board Optimizing queue operations in C# 🔗 *Related Problems* LeetCode 1091: Shortest Path in Binary Matrix LeetCode 1293: Shortest Path in a Grid with Obstacles Elimination LeetCode 787: Cheapest Flights Within K Stops LeetCode 1197: Minimum Knight Moves 👨‍💻 *Target Audience* Intermediate programmers preparing for coding interviews or seeking to improve their graph algorithm skills in C#. 📚 *Prerequisites* Basic understanding of C# programming Familiarity with graph traversal algorithms Understanding of queue data structure 🔍 *Useful Links* LeetCode problem statement: https://leetcode.com/problems/snakes-... Solution code: https://leetcode.com/problems/snakes-... 💬 *Additional Tips* Pay special attention to the board numbering system - it's not straightforward Practice converting between the 1D position and 2D board coordinates Consider using a dictionary to store snake and ladder positions for O(1) lookup 🚀 *Call To Action* If you found this solution helpful, please subscribe to the channel and hit the notification bell for more C# interview prep content! Share your questions or alternative approaches in the comments below. #leetcode #codinginterview #csharp #bfs #graphalgorithms #datastructures #algorithms #interview #programmingproblems #softwareengineering #dotnet #snakesandladders