DaveM wrote:
> Essentially, I'm trying to sort 12 dominoes. Each domino has two different
> numbers and there are two of every number. Identical dominoes are possible,
> but doubles are not.
>
> The problem is to place the dominoes in a line, side to side, so that two
> columns (or rows, depending
So if you have the dominoes (1 2), (3 2) and (3 1) you must arrange them as
1|2|3
2|3|1
? If so, then it seems to me your algorithm is this:
1. pick an arbitrary domino to be first, and an arbitrary side to be the "top"
2a. until the dominoes are exhausted, pick the other domino wi
