From: Christopher Dicely <cmdicely@...>
Date: 2008-02-07T11:15:29+09:00
Subject: Re: Array Practice

Anytime I  want to "build up" something from an existing Enumerable
object (Array, etc.) in Ruby, I usually look to inject or collect; the
most elegant of the way I've come up with of doing exactly what you
want uses ==, *, uniq, collect, find_all, and size, and the function
body fits on a single line without semi-colons.  (I'm not holding up
that it is a one-liner as a strength, just as a description.)

On Feb 6, 2008 3:20 PM, Adam Akhtar <adamtemporary@gmail.com> wrote:
> As some of you may know from previous threads im trying to practice
> specific areas of ruby. One simple exercise i set myself was taking a
> elements in an array such as
>
> [1,2,3,1,2,2,4,3,2,1]
>
> and then grouping them together and putting them in subarrays within an
> array like this
>
> [ [1,1,1], [2,2,2,2] , [3,3] ,[4] ]
>
> Heres how i did it (im new to both programming and ruby)
>
> def subpack(list)
>   uniqlist = Array.new
>   subpacklist = Array.new
>   list.sort!
>
>   uniqlist = list.uniq
>   uniqlist.each_index do |i|
>     rangeleft = list.index(uniqlist[i])
>     rangeright = list.rindex(uniqlist[i])
>     subpacklist << list.slice(rangeleft..rangeright)
>   end
>   subpacklist
> end
>
>
> WITHOUT GIVING ME YOUR SOLUTION IN FULL, how could i improve this...
> i.e. give me some hints, the names of some methods but not the solution
> as i want a go myself.
> --
> Posted via http://www.ruby-forum.com/.
>
>