From: Bertram Scharpf <lists@...>
Date: 2009-10-01T21:40:14+09:00
Subject: Re: how do you do this

Hi,

Am Donnerstag, 01. Okt 2009, 21:23:30 +0900 schrieb George George:
> 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"]

  x = %w(abc abcde def xyzwj)
  x.inject( Hash.new { |h,k| h[k] = [] }) { |h,e| h[e.length].push e ; h }

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de