Maximum Average Subarray I

1Easy

Maximum Average Subarray I

Given an integer array nums and integer k, find a contiguous subarray of length k with the maximum average value. Return the maximum average.

Example 1:

Input: nums = [1,12,-5,-6,50,3], k = 4 Output: 12.75 (subarray [12,-5,-6,50])

Example 2:

Input: nums = [5], k = 1 Output: 5.0

Jnaneshwara Reddy Satti

Builder · ClearCode

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Algorithm Visualizer

O(N)

Before starting this video, please check the description to ensure you know the prerequisites. If you're comfortable with arrays and hash maps, let's go!

TEST CASE: []O(1)

clearcode.in

Execution Trace

1def findMaxAverage(nums, k):

2 max_sum = sum(nums[:k])

3 current_sum = max_sum

4 for i in range(k, len(nums)):

5 current_sum += nums[i] - nums[i - k]

6 if current_sum > max_sum:

7 max_sum = current_sum

8 return max_sum / k

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Maximum Average Subarray I — Easy Arrays Algorithm | ClearCode