From: Christopher Dicely <cmdicely@...>
Date: 2008-02-10T06:49:37+09:00
Subject: Re: Array Practice

On Feb 9, 2008 12:50 PM, Adam Akhtar <adamtemporary@gmail.com> wrote:
> a few people have mentioned some pretty concise solutions involving
> map/collect selete find_all etc
>
> can someone give me an example of such a solution using the above.
>
> thanks
>
>
>
> --
> Posted via http://www.ruby-forum.com/.

irb(main):067:0> def subpack(list)
irb(main):068:1>   list.uniq.map { |item| [item] * list.find_all {
|val| val == item}.size }
irb(main):069:1> end
=> nil
irb(main):070:0> subpack [1,2,3,1,2,2,4,3,2,1]
=> [[1, 1, 1], [2, 2, 2, 2], [3, 3], [4]]