From: Paul Smith <paul@...>
Date: 2009-10-01T21:38:20+09:00
Subject: Re: how do you do this

On Thu, Oct 1, 2009 at 1:34 PM, Ilan Berci <ilan.berci@gmail.com> wrote:
> George George wrote:
>> Given an array of strings e.g.
>>  x = ["abc","abcde" "def","xyzwj"] and of different lengths,
>> how can you efficiently create new arrays of strings which are of the
>> same length. for example the above array can be transformed into
>>
>> x1 = ["abc","def"]
>> x2 = ["abcde","xyzwj"]
>>
>> Thank you.
>
> y = {}
> x.each do |v|
>  y[v.length] || = []
>  y[v.length] << v
> end
> y.values
>

LOL :)  I love Ruby and Rubytalk :)

> or if you prefer less lines..
>
> x.inject({}) do |h, v|
>  (y[v.length] || = []) << v
>  h
> end.values

Must.... master..... inject.....

-- 
Paul Smith
http://www.nomadicfun.co.uk

paul@pollyandpaul.co.uk