From: Christopher Dicely <cmdicely@...>
Date: 2008-02-07T11:16:46+09:00
Subject: Re: Array Practice

Oh, and uses  [].

On Feb 6, 2008 6:15 PM, Christopher Dicely <cmdicely@gmail.com> wrote:
> 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/.
> >
> >
>