LeetCode 918: Maximum Sum Circular Subarray | CSharp Solution | Kadane's Algorithm

📝 In this video, I solve the challenging circular subarray maximum sum problem using a modified Kadane's algorithm approach in C#. #leetcode #arrays #kadane #dynamicprogramming ⏱️ Time Complexity: O(n) 🗃️ Space Complexity: O(1) ## TIMESTAMPS 00:00 - Understanding problem statement 01:08 - Subarray concepts 02:19 - Applying Kadane's algorithm 03:11 - Solving Circular Subarray Scenario 04:24 - Modified Kadane's algorithm-dry run 05:08 - Big O Notation calculated 05:41 - C# solution walk-through 06:46 - Solution analysis - runtime + memory ## KEY CONCEPTS - Kadane's Algorithm - Circular Arrays - Maximum Subarray - Edge Case Handling - Dynamic Programming ## WHAT YOU'LL LEARN - How to adapt Kadane's algorithm for circular arrays - Handling the special case of all negative numbers - Efficient approach to find maximum circular subarray sum - Intuition behind the "inversion" technique ## RELATED PROBLEMS - LeetCode 53: Maximum Subarray - https://www.youtube.com/watch?v=6Z2gKD0sHhg - LeetCode 152: Maximum Product Subarray - LeetCode 1186: Maximum Subarray Sum with One Deletion - LeetCode 1191: K-Concatenation Maximum Sum ## TARGET AUDIENCE This video is for software engineers preparing for coding interviews, with focus on array manipulation and dynamic programming techniques. #codinginterviews #techprep ## PREREQUISITES - Basic knowledge of arrays and loops in C# - Understanding of simple dynamic programming - Familiarity with the original Kadane's algorithm is helpful but not required ## LINKS 📄 Problem: https://leetcode.com/problems/maximum-sum-circular-subarray/ 💻 Solution Code: https://leetcode.com/problems/maximum-sum-circular-subarray/solutions/6900718/maximum-circular-subarray-sum-solution-i-sgyg ## ADDITIONAL TIPS - Remember that a circular subarray can be represented in two ways: either a normal subarray or a prefix + suffix - Pay special attention to the case where all elements are negative - Understanding the "total sum minus minimum subarray sum" approach is key to solving this efficiently ## CALL TO ACTION If you found this solution helpful, please like and subscribe for more coding interview preparation content! Drop your questions or alternative approaches in the comments below. Let me know which LeetCode problem you'd like to see solved next! #csharp #algorithms #subscribe