Given an integer array nums and an integer k, determine the maximum sum among all contiguous subarrays whose length is exactly k. The goal is to use the smallest feasible time complexity.
Input:
nums.k specifying the required subarray length.Output:
k.Example:
Input: nums = [1, 4, 2, 10, 23, 3, 1, 0, 20], k = 4
Output: 39
Explanation: The four-element subarray [4, 2, 10, 23] produces the greatest sum.
nums = [1,4, 2, 10, 23, 3, 1, 0, 20] k = 4
39
We have an array nums = [1, 4, 2, 10, 23, 3, 1, 0, 20] and k = 4. We need to find the contiguous subarray of length 4 with the maximum sum.
Constraints:
1 ≤ nums.length ≤ 10^51 ≤ nums[i] ≤ 10^41 ≤ k ≤ nums.lengthnums = [1,4, 2, 10, 23, 3, 1, 0, 20] k = 4
39
We have an array nums = [1, 4, 2, 10, 23, 3, 1, 0, 20] and k = 4. We need to find the contiguous subarray of length 4 with the maximum sum.