http://www.perlmonks.org?node_id=620764


in reply to Re: The glass is...
in thread The glass is...

Water? Dihydrogen monoxide. :)
C(qw/74 97 104 112/);sub C{while(@_){$c**=$C;print (map{chr($C!=$c?shift:pop)}$_),$C+=@_%2!=1?1:0}}