ok, solving the problem, 58, or 59 if the ambiguity warning disturbs you.

#        1         2         3         4         5
# 3456789 123456789 123456789 123456789 123456789 123456789
print map{chr+(($_=$ARGV[0]+ord)>122?-26:0)+$_}split//,pop  ;
print map{chr((($_=$ARGV[0]+ord)>122?-26:0)+$_)}split//,pop ;

[download]

update: changed hiding code here, too

--
http://fruiture.de

In reply to Re^2: Golf: ROT-n by fruiture
in thread Golf: ROT-n by hardburn

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