I get my own ugly code

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sub rw { my $word = "$_[0]"; $word =~ s/(.)/rc($1)/ge; $word;}
sub rc { return ((rand(1)*2+1)%2) ? lc($_[0]): uc($_[0]); }

(i don't care about efficiency or whatnot, i was just creating a simple function for a unit test, it just looks like someone threw up some letters.