Simple algorithm question - how to reorder a sequence economically

[Roy Smith]

In article <15a1bb3a-514c-454e-a966-243c84123be9 at googlegroups.com>,
 John Ladasky <john_ladasky at sbcglobal.net> wrote:

> Because someone's got to say it... "The generation of random numbers is too 
> important to be left to chance." ‹ Robert R. Coveyou

Absolutely.  I know just enough about random number generation to 
understand that I don't really know anything about it :-)

That being said, people who really care about random numbers, tend to 
rely on some sort of physical process instead of computer algorithms.  A 
classic example would be /dev/random.  A somewhat more fun example is 
http://www.youtube.com/watch?v=7n8LNxGbZbs.  Something radioactive and a 
geiger counter are a good source of randomness (time intervals between 
decay events).