easySliding Window Pattern

Maximum Sum Subarray of Size K

Given an array of integers and a number `k`, find the maximum sum of any contiguous subarray of size `k`.

Examples

Input:arr = [2, 1, 5, 1, 3, 2], k = 3
Output:9

Explanation: Subarray [5, 1, 3] has maximum sum of 9.

Input:arr = [2, 3, 4, 1, 5], k = 2
Output:7

Explanation: Subarray [3, 4] has maximum sum of 7.

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