From: Robert Dober <robert.dober@...>
Date: 2007-02-26T19:16:12+09:00
Subject: Re: extract a random number of items from an array

Ooops bad formatting again, sorry for the repost folks:

On 2/26/07, Robert Dober <robert.dober@gmail.com> wrote:
> Actually James' solution does not give you n elements, maybe you want to try this
an_ary.sort_by{ rand }[0..n-1]  # Might use a second or two of CPU for
millions of elements though ;)
should do the trick unless you want a *stable* subarray.
Stable means that if x occurs on the LHS of y in an_ary it also does
in your subarray, but if I read you correctly you did not need this.

Cheers
Robert