Nine Billion Names Of God

I don’t remember how the subject came up, but Rachel and I were talking about the old Arthur Clarke story. Still a good yarn, but the amusing part to me now is that what back then could’ve plausibly taken two engineers to build, and three months to run, is now a six-line comp 101 exercise:

#!/usr/bin/perl -w
my $count = 0;
for (my $name = 'a'; $name lt 'zzzzzzzzz'; $name++) {
    next if $name =~ m/(.)\1\1\1/;
    # print "$name\n"; 
    $count++;
}
print "God has $count names. Enjoy the end of the world.\n";

(I know, I know, there’s probably a more efficient way to handle the no-more-than-three-repeating-letters rule than that clunky regexp. But this was just for yucks, during my morning coffee.)






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