[Purdue-pm] Mark's Travelling Capital Problem
Dave Jacoby
jacoby at purdue.edu
Fri Feb 18 06:16:48 PST 2011
I wrote code to determine Mark Senn's shortest and longest path using
what I thought was the obvious most-remote capital in the lower 48
(Maine) and the obvious method, choosing the closest capital (or the
longest, depending on the decision.
I think the decision for the longest is sound. I cannot imagine a more
convoluted path than longest.png, but I'm seeing problems with the
"shortest" graph. Clearly, UT AZ CA NV OR WA would be a better choice
than leaving AZ for last. I'm not sure the New England path is optimal,
either.
Which means I'll have to come up with something better, that recurses
more. I don't want to check all possible choices, as that's going to be
48! choices and I want an answer before the sun burns out. But maybe
starting out with all 48 and definitely checking through the 5 closest
capitals at each time. This will kick up the search time, which right
now sits at less than a second on my desktop system.
Upon request, I can share my state data and distance algorithm, although
I did find both through Google searches.
--
Dave Jacoby Address: WSLR S049
Code Maker Mail: jacoby at purdue.edu
Purdue University Phone: 765.49.67368
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