From: Clifford Heath <no.spam@...>
Date: 2007-05-04T13:20:05+09:00
Subject: Spoiler - Re: Unofficial Ruby Quiz -- Ranking Choices

Ken Bloom wrote:
> I have a list of some items, and I would like to manually rank which ones 
> are most important to me. But it's not easy to rank them when I'm looking 
> at them all at once, so I'd like to consider them in pairs and choose 
> from each pair which one is most important to me.

Topological sort. "man tsort" on most *nix systems, or
<http://en.wikipedia.org/wiki/Topological_sorting#Algorithms>.
The rest is just I/O.