Given daily temperatures temps and a window size k, return the average of every block of k consecutive readings, in order. Averages are floats (sum / k). If k is larger than the number of readings, return [].
Examples
Input: temps = [1, 2, 3, 4, 5], k = 3
Output: [2.0, 3.0, 4.0]
Input: temps = [1, 2], k = 3
Output: []
Constraints
0 <= len(temps) <= 10**51 <= k <= 10**5- Target: O(n) time (not O(n * k)).
Goals
- Compute every window of size k without re-summing from scratch
- Return an empty list when the window does not fit