From: Phillip Hutchings <sitharus@...>
Date: 2006-07-05T09:21:24+09:00
Subject: Re: Parallel Array

On 7/5/06, Nasir Khan <rubylearner@gmail.com> wrote:
> If I have two arrays a=[1,1,1,1] and b=[2,2,2,2] and I want to add each
> element up, something like -
>
> c = a plus b  => [3,3,3,3]
>
> One way I could think up is -
>
> irb(main):010:0> (0...a.length).collect{|k| a[k]+b[k]}
> => [3, 3, 3, 3]
>
> Is there a better/faster way?
>
> Thanks
> Nasir
>
>

a.zip(b).collect{|x| x.inject{|q, r| q+r}}


-- 
Phillip Hutchings
http://www.sitharus.com/