[Octave-bug-tracker] [bug #31512] Problem with code on Linux octave 3.2.3 and 3.2.4/// OK on mac w/ 3.2.3

[kody law]

Follow-up Comment #17, bug #31512 (project octave):

I was going to start a new thread, but apparently I am no longer authorized
to submit to this group .... if anyone knows how to be readmitted, I would
appreciate it.

So, the new peculiarity is attached.  Any suggestions about how to speed it
up would be greatly appreciated.  Thanks a lot for all your help!

A takes about 2.5 seconds on matlab, while B takes 2 seconds.  On octave the
difference is more than an order of magnitude!

%%%% when A is uncommented and B is commented, 
%%%% the routine takes 40 secs!

%%%% when B is uncommented and A is commented, 
%%%% the routine takes 2 secs!

%%%% each time, the program sorts a permutation into
%%%% cycles, going through each element.  'lens' lists 
%%%% the number of elements in permutations of each length

%%%% longer permutations = 
%%%% fewer entries into while loop =
%%%% faster -- too much faster!

Thanks again, best


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