LeetCode 1717: Maximum Score From Removing Substrings | Python Solution | Greedy Algorithm

📝 In this video, I tackle the challenging problem of maximizing the score by strategically removing "ab" and "ba" substrings from a given string. #leetcode #greedy #stringmanipulation #pythonsolution ⏱️ Time Complexity: O(n) where n is the length of the input string 🧮 Space Complexity: O(n) for the stack-based approach ## TIMESTAMPS 00:00 - Understanding problem statement 01:31 - Understanding the logic 03:24 - Brute force approach 04:12 - Optimized solution explained 08:05 - Python code walk-through 10:00 - Solution analysis - runtime + memory 10:08 - Conclusion ## KEY CONCEPTS - Greedy algorithm approach - Stack-based string manipulation - Pattern matching - Optimal subproblems ## MAIN LEARNING POINTS - How to determine the optimal sequence for removing substrings - Implementing an efficient stack-based solution for string manipulation - Analyzing when greedy approaches work for string problems - Techniques for maximizing scores in constrained optimization problems ## RELATED PROBLEMS - LeetCode 1003: Check If Word Is Valid After Substitutions - LeetCode 1209: Remove All Adjacent Duplicates in String II - LeetCode 1249: Minimum Remove to Make Valid Parentheses - LeetCode 402: Remove K Digits ## TARGET AUDIENCE This video is perfect for intermediate programmers preparing for technical interviews, focusing on string manipulation problems and greedy algorithms. ## PREREQUISITES - Basic Python knowledge (strings, lists, loops) - Understanding of stack data structure - Familiarity with greedy algorithm concepts ## USEFUL LINKS - LeetCode Problem: https://leetcode.com/problems/maximum-score-from-removing-substrings/ - Solution Code: https://leetcode.com/problems/maximum-score-from-removing-substrings/solutions/7026490/stack-based-string-manipulation-solution-eqqn ## ADDITIONAL TIPS - Pay special attention to the order of removing substrings - it significantly impacts the final score - Consider exploring alternative approaches like dynamic programming and compare efficiency - Practice similar problems to reinforce the pattern recognition skills needed for string manipulation 💡 If you found this video helpful, please LIKE, SUBSCRIBE, and hit the notification bell to never miss a new coding solution! Leave your questions or alternative approaches in the comments below. #leetcode #pythonsolution #greedy #codinginterview #stringmanipulation #leetcode1717 #leetcodehard #algorithm #programminginterview #codingchallenge #techinterview #faangprep #datastructuresandalgorithms