From: Josselin <josselin@...>
Date: 2007-04-28T22:10:05+09:00
Subject: cyclic array

I would like to print  n elements from an Array in a cyclic way.

I mean :

using anArray = [ "a", "b", "c", "d", "e", "f", "g"], I should do :

 anArray.print_cyclic(4, 0) => "a", "b", "c", "d"   (first print  4 
elements starting with the first one)

anArray.print_cyclic_next => "b", "c", "d", "e"
anArray.print_cyclic_next => "c", "d", "e", "f"
anArray.print_cyclic_next => "d", "e", "f", "g"
anArray.print_cyclic_next => "e", "f", "g", "a"
anArray.print_cyclic_next =>  "f", "g", "a", "b"
anArray.print_cyclic_next => "g", "a", "b", "c"
.....
also in reverse cycle
anArray.print_cyclic(4, 0) => "a", "b", "c", "d"
 anArray.print_cyclic_previous => "g", "a", "b", "c"
 anArray.print_cyclic_previous => "f", "g", "a", "b",

what could be the simplest way to do it ?  no simple way using Array 
class methods only  ,
should I define a class and methods to loop into the array ?  any 
existing lib ?  if it has been already done why should I rewrite it ....


tfyh

joss