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Thanks Grimy.

By the way, the PHP md5 solution works in Perl too since these two languages have essentially the same bitwise string operators:

use Digest::MD5 qw(md5_hex); sub r {uppp&md5_hex$_.PQcUv} print "$_: ", 0+r(), "\n" for (qw(I V X L C D M));

I've updated the Perl summary of shortest solutions in the root node like so:

VLD=~$_*5+IXCM=~$_."E@-" # Perl 10**(7&5045e8/ord)%2857 # Perl (64-bit) IXCMVLD=~$_;"1E@-"%9995 # Perl XCMVLD=~$_;"1E@+"%9995 # Perl (Grimy improvement) uppp&md5_hex$_.PQcUv # Perl (needs Digest::MD5 module)

As you can see, if Perl had a md5 built-in function, this would be the shortest Perl solution -- even with a ridiculously long md5_hex function name!

Update: for full details on how I happened to find this md5 solution, see Re^2: The golf course looks great, my swing feels good, I like my chances (Part III).


In reply to Re^2: The 10**21 Problem (Part I) by eyepopslikeamosquito
in thread The 10**21 Problem (Part I) by eyepopslikeamosquito

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