[Octave-bug-tracker] [bug #65176] unique.m - Enable third output with option 'stable'

[Nicholas Jankowski]

Follow-up Comment #13, bug#65176 (group octave):

ok. figured out how to avoid the sort for k. I realized k is just a mapping of
sorted x, or x(i) back to x, such that x(i)(k) = x.  that can be gotten from k
and i with:


k = i #cheap way to initialize k to the right size
k(i) = 1:n; 

 I'm pretty sure there's something similar that can be done to remove the need
to sort for s, but don't have that yet.



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