Efficient Range Sum Queries Using Prefix Sum Arrays
Consider the problem of identifying a contiguous subarray of a fixed length k that yields the maximum sum within a given array arr of size n. A direct approach involves iterating over all possible starting indices left from 0 to n-k. For each left, the sum of the subarray arr[left ... left+k-1] is computed. This results in a time complexity of ...
Posted on Sun, 01 Nov 2026 16:14:54 +0000 by php_gromnie