From: Harry Kakueki <list.push@...>
Date: 2011-07-25T10:08:44+09:00
Subject: Re: best style for setting items in a collection

>
> for i in 1...arr.length
>   arr[i] += arr[i - 1]
> end
>

If you make a new array you could try something like this.
I do not know how fast it is but if you only have about 12 elements.....

p Array.new(arr.size){|x| arr[0..x].inject{|a,b| a+b}}






Harry