Maximum Sum Subarray of size K | Sliding Window

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Problem Description: https://practice.geeksforgeeks.org/pr...


Given an array of integers Arr of size N and a number K. Return the maximum sum of a subarray of size K.

Example:

Input:
N = 4, K = 2
Arr = [100, 200, 300, 400]
Output:
700
Explanation:
Arr3 + Arr4 =700,
which is maximum. .
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