Didn't understand the output of the following Python 3 code with reduce function?
David Raymond
David.Raymond at tomtom.com
Fri Aug 28 10:25:49 EDT 2020
All the numbers in the nums list don't matter and aren't used. Only the first number, and how many there are.
https://docs.python.org/3.8/library/functools.html#functools.reduce
Basically it's doing
ADDS(1, 2) which returns 2
that 2 gets fed back into
ADDS(2, 3) which returns 3
that 3 gets fed back into
ADDS(3, 4) which returns 4
...
ADDS(8, 9) which returns 9
> I have seen this code on one of competative programming site but I didn't get it, Why output is 9?
>
> from functools import *
>
> def ADDS(a,b):
> return a+1
> nums = [1, 2, 3, 4, 5, 6, 7, 8, 9]
> add = reduce(ADDS, nums)
> print(add)
>
> output: 9
More information about the Python-list
mailing list