I wrote the Set::CrossProduct module to do this sort of thing. It doesn't do anything recursive, and you can get back the entire set of tuples all at once or one tuple at a time. Getting them one at a time is really handy when you end up generating thousands of tuples. :)

--
brian d foy <bdfoy@cpan.org>

In reply to Re: Trying to construct all possible strings from 4 bases [ATCG] by brian_d_foy
in thread Trying to construct all possible strings from 4 bases [ATCG] by monkfan

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