Moving Average
mediumnumpy_reductionsImplement moving_average(a, n).
Given a 1D array a and a window length n, return the array of
length-n moving averages. The output has length len(a) - n + 1, where
output i is the mean of a[i : i + n]. Vectorize it — no for/while
loops (hint: prefix sums).
Constraints
- no scipy, sklearn
- no for/while loops
Your solution
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Hints
Hint 1
np.cumsum gives prefix sums; a window sum is the difference of two of them.