On Thu, 2007-11-08 at 00:56 +0100, jerzy.karczmarczuk@info.unicaen.fr wrote:
Don't shoot me...
The last exchange with Andrew Bromage made me recall a homework which was given to some students by a particularly nasty teacher I happen to know.
The question is to generate the whole infinite Rabbit Sequence in one shot (co-recursive, selbstverständlich).
The Rabbit Sequence: 1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,... may be obtained in two ways.
A. 1. Begin with one *young* rabbit: 0. 2. In one unit of time a young rabbit grows, becomes *old*: 1. 3. In one unit of time an old rabbit has an offspring, transmutes into [1,0] (Yes, the rewriting order is meaningful).
Don't rabbits ever die? Guess they just become zombie rabbits ... [1] But that still doesn't work, because those would then eat all those other rabbits ... Hm ... [1] .. http://www.ebsqart.com/Artists/cmd_3739_profile_portfolio__3_3_G.htm