From: Matthew Moss <matthew.moss@...>
Date: 2008-09-20T22:10:34+09:00
Subject: Re: One-Liners Mashup (#177 again)


> Write a function per(n) which returns the periodicity of 1/n, i.e.
>   per(3) => 1
>   per(4) => 0
>   per(7) => 6
>   per(11) => 2

I think you're going to have to explain what periodicity is, or
provide a link... I've no clue.