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Code reviewMediumcr-g274
Subject Off by oneLevel Mid–Senior~16 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

Review this Python sliding-window sum that produces the sum of every contiguous window of size k.

Called in a metrics pipeline; `k` is user-configurable.

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Code to reviewpython
def window_sums(a, k):    sums = []    s = sum(a[:k])    sums.append(s)    for i in range(k, len(a)):        s += a[i] - a[i - k]        sums.append(s)    return sums
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