> but pull-requests adding them (ideally with tests) are always welcome.

Graph coloring is a vast field, IMHO this would need to be addressed in an extra module.

I was lucky to find a satisfying optimal solution, but only for the edge coloring of complete graphs (like requested by the OP)

This edge-case (sic ;) can hardly be included in your very general module.

And there is no easy generalization, according to WP is the general case of an optimal coloring known to be NP-hard.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^5: Graph labeling problem by LanX
in thread Graph labeling problem by baxy77bax

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