From: Robert Klemme <shortcutter@...>
Date: 2006-06-23T17:45:55+09:00
Subject: Re: Randomly select an element from an array

2006/6/22, Chris Hulan <hulachr@hotmail.com>:
> David Solis wrote:
> > I have an array:
> >
> > [1,2,3,4,5]
> >
> > How do I randomly select an element from the array?
>
> Array now has built-in random sorting so you could
>
> [1,2,3,4,5].sort_by{rand}.last

While this certainly works it's extremely inefficient.

robert

-- 
Have a look: http://www.flickr.com/photos/fussel-foto/