From: Reid Thompson <reid.thompson@...>
Date: 2008-03-26T07:55:54+09:00
Subject: Re: generating unique random numbers

Jimmy Palmer wrote:
> I'm trying to generate 8 unique random numbers between 1 and 13.
> 
> for example my first set of results could be:
> 
> 2, 8, 4, 6, 3, 10, 12, 1
> 
> the results need to be between 1 and 13 and they must be unique.
> 
> The rand(12) + 1 returns random numbers between 1 and 13, but they are
> not unique.  Any quick solutions?


http://realrand.rubyforge.org/