On Saturday, 29 August 2020 at 02:47:56 UTC+5:30, Ben Bacarisse wrote:
Thanks you all, I was really confused in this code.
> Shivlal Sharma <sshivl...@gmail.com> writes:
>
> > 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
> Hint:
>
> reduce(f, [e1, e2]) is f(e1, e2)
> reduce(f, [e1, e2, e3]) is f(f(e1, e2), e3)
> reduce(f, [e1, e2, e3, e4]) is f(f(f(e1, e2), e3), e4)
>
> Replace f with a function that adds one to its first argument. Does
> that help?
>
> --
> Ben.
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