R-alpha: speed of sort(.) and order(.)
Thu, 4 Sep 1997 10:26:46 +1200 (NZST)
Martin Maechler writes:
[ stuff on sorting which I leave out ]
> which makes 'sort' almost a factor of 2 FASTER for an unsorted 'x'.
> Any comments from the coders (R & R) ?
I wasn't there, I hardly knew the woman and anyway it wasn't my dog :-).
Well, I didn't look closely at the code, but as I recall both "sort"
and "order" use a shellsort recomended by Sedgewick (he says only
true sorting gurus like him should attempt quicksort and that mortals
like me should stick with shellsort).
It does look odd. When I get a moment I will dig deeper.
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: email@example.com