How to Solve Leetcode 3381: Maximum Subarray Sum with Length Divisible by k

Nov 27, 2025 · 3 min read · Intuition We aim to find the maximum sum of a subarray whose length is divisible by k. Instead of examining all possible subarrays, which would be inefficient, we employ a snake-like sliding trick. This involves moving forward one step at a time, kee...