[Tutor] Re: sorting by values in dict

[Kalle Svensson]

[Paul Tremblay]
> On Thu, Nov 13, 2003 at 10:50:38AM +0100, Andrei wrote:
> > =====
> > Mail address in header catches spam. Real contact info (decode with rot13):
> > cebwrpg5 at jnanqbb.ay. Fcnz-serr! Cyrnfr qb abg hfr va choyvp cbfgf. V ernq
> > gur yvfg, fb gurer'f ab arrq gb PP.
> 
> What is this? So a robot can't read this, right? But how do you
> decode it?

Rot13 is a very simple encryption method where you rotate each letter
13 steps alphabetically (a 13-step Caesar cipher).  Example:

A -> N
C -> P
N -> A
Q -> D

Note that rot13(rot13(x)) == x.

Peace,
  Kalle
-- 
Kalle Svensson, http://www.juckapan.org/~kalle/
Student, root and saint in the Church of Emacs.