Adding previous and current index in Numpy Arrays Python

Question

How could I code a function that adds to the previous index of the array without using a for loop. So for the second value in the Expected Output it will be previous index (2) plus current index(5) resulting in 7. How would I be able to do such a thing?

import numpy as np

A = np.array([2,5,44,-12,3,-5])

Expected output:

[2,7,51,39,42,37]

sharathnatraj · Accepted Answer · 2021-06-21 00:43:37Z

1

Here you go:

np.cumsum(A)

Prints:

array([ 2,  7, 51, 39, 42, 37], dtype=int32)

answered Jun 21, 2021 at 0:43

sharathnatraj

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