How can I find the max value between certain index values in an array (Python)

Question

If I have an array in python:

a = np.array([20, 21, 19, 85, 25, 31, 21, 99, 3])

and I want to find the max value between indices 2 and 5 to return 85. How can I do this?

I know a.max() will output the value 99, but I am not sure how to specify the range.

Do you know about slicing? – Ashwini Chaudhary Jul 28 '17 at 12:44 — Ashwini Chaudhary, Jul 28 '17 at 12:44

score 3 · Answer 1 · answered Jul 28 '17 at 12:47

3

Just use slicing.

a = np.array([20, 21, 19, 85, 25, 31, 21, 99, 3])
a[2:5].max()

gives 85 as max value.

answered Jul 28 '17 at 12:47

error

score 1 · Answer 2 · answered Jul 28 '17 at 12:47

1

Simply call a[2:5].max().

It will search in the sub array containing the elements you're interested in.

answered Jul 28 '17 at 12:47

2 Answers2