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Re^4: Counting positive numbers

by Young Monk (Novice)
on Jul 04, 2010 at 08:15 UTC ( #847963=note: print w/replies, xml ) Need Help??

in reply to Re^3: Counting positive numbers
in thread Counting positive numbers

After a little googling, i found that those top scoring guys have actually exploiting the "<33 ASCII not counted as character" condition to get a very high(low, actually) score...!

Take a look

Im wondering, how can u compress a perl program into characters with ASCII <33 such tat the latter still works???

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Re^5: Counting positive numbers
by eyepopslikeamosquito (Chancellor) on Jul 04, 2010 at 12:31 UTC

    It seems to me you'll need to invent an encoding scheme and build the required "normal" program string from a string consisting of characters in the ord range 0-32 ... then use Perl's eval function (or perhaps s///ee) to evaluate it.

    This looks like a tricky problem to me, especially for a Perl novice. Many approaches are possible. One way to get started is to use the s/// and the y/// operators with a delimiter less than ord(32) like so:

    s^Z^Z^A^B^C^D^E^F^G^H^Z; y^Z^A^B^C^D^E^F^G^H^Za-z^Z; print
    where ^A to ^Z above are CTRL-A to CTRL-Z (i.e. chars with ord 1..26). Running the little test program above produces:
    You may be able to extend this scheme to produce whatever 30 or so characters are required by a "normal" (unencoded) solution. Having generated the required program string, you could replace the print above with eval. That would seem to yield a solution of around 11 "characters" in length. If you start down this road, you may find further inspiration as you try out ideas.

    Some old nodes from mtve might provide further ideas you could try:

Re^5: Counting positive numbers
by Corion (Pope) on Jul 04, 2010 at 08:33 UTC

    Most likely this is a golfed version of Acme::Bleach. But doing something like that in 6 characters still seems hard...

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