LeetCode 97: Interleaving String | Python Solution | Dynamic Programming

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YouTube Excerpt: 📝 In this video, we tackle the #interleaving-string problem where we determine if a third string can be formed by interleaving characters from two input strings while maintaining their relative order. #dynamic-programming #string-manipulation ⏱️ **Complexity:** - Time Complexity: O(m*n) where m and n are the lengths of the two strings - Space Complexity: O(m*n) for the DP table ## ⏰ Timestamps: 00:00 - Understanding problem statement 01:05 - Brute force - using two pointers 03:21 - Brute force - dry run 04:17 - Brute Force - Big O Notation 04:56 - Using Dynamic Programming 06:09 - Big O Notation calculated 07:01 - Python code walk-through 08:30 - Solution analysis - runtime + memory 08:38 - Conclusion ## 🔑 Key Concepts: - Dynamic Programming with 2D table - String manipulation - Bottom-up vs Top-down DP approach - Memoization techniques ## 📚 Learning Points: - How to identify overlapping subproblems in string problems - Efficiently tracking valid interleaving patterns - Optimizing DP solutions to reduce space complexity - Handling edge cases in string-matching problems ## 🔄 Related Problems: - LeetCode 10: Regular Expression Matching - LeetCode 44: Wildcard Matching - LeetCode 115: Distinct Subsequences - LeetCode 72: Edit Distance ## 👥 Target Audience: This video is for intermediate-level programmers preparing for coding interviews, particularly those focusing on dynamic programming and string manipulation problems. ## 📋 Prerequisites: - Basic understanding of dynamic programming concepts - Familiarity with Python syntax - Knowledge of string operations in programming ## 🔗 Links: - Problem: https://leetcode.com/problems/interleaving-string/ - Solution Code: https://leetcode.com/problems/interleaving-string/solutions/7174120/dynamic-programming-solution-in-python-w-ir7u ## 💡 Additional Tips: - Pay special attention to the base cases in this problem - Try solving with both 2D DP array and the optimized 1D approach - Practice tracing the algorithm with a small example first ## ⭐ Call to Action: If you found this solution helpful, please hit the like button and subscribe for more coding interview prep content! Share your questions or alternative approaches in the comments section below. #leetcode #pythonsolution #codinginterview #dynamicprogramming #interleaving-string #algorithmpractice #interviewprep #stringmanipulation #programmingproblems

📝 In this video, we tackle the #interleaving-string problem where we determine if a third string can be formed by interleaving characters from two...

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