Maximum Sum Subarray of Size K (easy)

Problem Statement

Given an array of positive numbers and a positive number 'k,' find the maximum sum of any contiguous subarray of size 'k'.

Example 1:

Input: [2, 1, 5, 1, 3, 2], k=3 
Output: 9
Explanation: Subarray with maximum sum is [5, 1, 3].

Example 2:

Input: [2, 3, 4, 1, 5], k=2 
Output: 7
Explanation: Subarray with maximum sum is [3, 4].

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Python3
Python3