[OT] n-way union

Andrei Alexandrescu SeeWebsiteForEmail at erdani.org
Mon May 25 16:39:33 PDT 2009

Jason House wrote:
> Don't get offended, he didn't respond to anyone else's algorithm either. 

I just wanted to bring what I think is an interesting problem to the 
table; my response shouldn't be used as a yardstick for one's ability to 
define a good algorithm.

Now that I feel pressured to give an answer, I'd say that BCS's answer 
is right on the money. It's the exact algorithm I put in std.algorithm 
(not checked in yet), and it works leanly and meanly on a large data set 
as we speak. Sean's, bearophile's, and your answers were also very close 
to BCS's, just that yours was a tad less detailed and the others came a 
bit later.


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