[Numpy-discussion] List/location of consecutive integers
Fri May 22 11:31:19 CDT 2009
this should be a very easy question but I am trying to make a
script run as fast as possible, so please bear with me if the solution
is easy and I just overlooked it.
I have a list of integers, like this one:
indices = [1,2,3,4,5,6,7,8,9,255,256,257,258,10001,10002,10003,10004]
>From this list, I would like to find out which values are consecutive
and store them in another list of tuples (begin_consecutive,
end_consecutive) or a simple list: as an example, the previous list
new_list = [(1, 9), (255, 258), (10001, 10004)]
I can do it with for loops, but I am trying to speed up a fotran-based
routine which I wrap with f2py (ideally I would like to do this step
in Fortran too, so if you have a suggestion on how to do it also in
Fortran it would be more than welcome). Do you have any suggestions?
Thank you for your time.
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