🄵🄰🄸🄻 Leetcode 2017. Grid Game

📢 Grid Game LeetCode (Prefix-Suffix Sum) - A Learning FAIL but With Great Insights!

Hey there, coding fam! ✨ Today’s daily LeetCode challenge takes us on a wild ride with prefix-suffix sums to solve the Grid Game problem. Buckle up as I walk you through my thought process from the initial idea 💡, to the coding implementation 🖥️, to the final debugging session (which ran for over 10 minutes⏱️). Despite the bumps and hiccups along the way, this approach provides valuable insights into optimizing an otherwise 𝑂(𝑛^2) problem into a more efficient solution.

🆕 What’s Covered in This Video
⭐ Idea Description: Why prefix-suffix sums are handy in tackling this problem.
⭐ Implementation: Watch me code the solution, step by step.
⭐ Debugging: Learn from my missteps and see how I fix issues in real time.
⭐ Reflection: Sometimes the final answer ends up as a FAIL — but the key is we learn and improve!

🤔Why Prefix-Suffix Sums?
❗I precompute cumulative sums from both ends of the grid.
❗This helps me avoid recomputing sums repeatedly, cutting down on complexity.
❗I then pick the optimal split that yields the minimal maximum sum the second player can get.

📖 Key Points:
👨‍💻 ps_sum tracks suffix sums for the top row (right to left).
👨‍💻 ps_sum tracks prefix sums for the bottom row (left to right).
👨‍💻 I then try each possible transition point to minimize the maximum sum the opponent can take.

🚀 Conclusion
Sometimes, the solution gets an initial FAIL, but don’t let that discourage you. We learn something new with every attempt! In the end, the prefix-suffix approach is a powerful technique to optimize your solutions. Thank you for joining me on this ride—hope you enjoy my thought process! 😄

Remember to like, subscribe, and share if you found this helpful. Good luck and happy coding! 🚀✨

#LeetCode #CodingJourney #HashSet #Bitmask #ProblemSolving #NeverGiveUp #leetcodechallenge #leetcode #coding #codinginterview #java