LeetCode 3381 🔥 Maximum Subarray Sum Divisible by K | Prefix Mod Trick + Optimal Solution скачать в хорошем качестве

LeetCode 3381 🔥 Maximum Subarray Sum Divisible by K | Prefix Mod Trick + Optimal Solution

Welcome to today’s LeetCode Daily Challenge – Problem 3381: Maximum Subarray Sum With Length Divisible by K. Code: https://github.com/studyPlacement/Cod... Graph for Placemenets:    • Graph   Linked List:    • Linked List   Arrays:    • Arrays   Leetcode Contests:    • Leetcode Contests   Neetcode 150 Playlist:    • Neetcode 150   SDE Sheet for Interview:    • Плейлист   DP Playlist:    • Dynamic Programming   Sliding window Playlist:    • Sliding Window   Binary Search Playlist:    • Плейлист   In this video, we solve the problem using the most optimal Prefix Sum + Modulo technique, which is perfect for interview-level subarray problems. ⭐ Approach Used We maintain: A running prefix sum A mapping of (index % k) to the minimum prefix sum seen so far Whenever two indices share the same i % k, the subarray between them has length divisible by k Use difference of prefix sums to extract the maximum possible subarray sum This gives a clean O(n) solution. ⭐ What you will learn: Prefix modulo pattern for subarray problems How length constraints can be handled via (index % k) Efficient way to track minimum prefix for maximizing result Clean and optimal code with dry run Perfect technique for today’s DCC 🚀 Topics Covered: LeetCode Daily Challenge Prefix Sum Modulo Arithmetic Subarray Optimization HashMap / Array Buckets #LeetCode3381 #DCC #DailyChallenge #MaximumSubarrayDivisibleByK #PrefixSum #ModuloTrick #SubarrayProblem #DSA #LeetCodeSolution #StudyPlacement #CodingInterview