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g0601_0700.s0643_maximum_average_subarray_i.readme.md Maven / Gradle / Ivy

643\. Maximum Average Subarray I

Easy

You are given an integer array `nums` consisting of `n` elements, and an integer `k`.

Find a contiguous subarray whose **length is equal to** `k` that has the maximum average value and return _this value_. Any answer with a calculation error less than 10-5 will be accepted.

**Example 1:**

**Input:** nums = [1,12,-5,-6,50,3], k = 4

**Output:** 12.75000

**Explanation:** Maximum average is (12 - 5 - 6 + 50) / 4 = 51 / 4 = 12.75

**Example 2:**

**Input:** nums = [5], k = 1

**Output:** 5.00000

**Constraints:**

*   `n == nums.length`
*   1 <= k <= n <= 105
*   -104 <= nums[i] <= 104