shuffling elements of a list

[Sybren Stuvel]

David C  Ullrich enlightened us with:
> I thought that the fact that you could use the same trick for
> _shuffling_ a list was my idea, gonna make me rich and famous. I
> guess I'm not the only one who thought of it. Anyway, you can use
> DSU to _shuffle_ a list by decorating the list with random numbers.

This is often done in database queries that need to randomize the data
;-)

Sybren
-- 
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself? 
                                             Frank Zappa