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Here's my second attempt at a threaded version. Running it with -T=24 won't be fastest unless you have 24 cores, but it has the interesting side effect of running all first picks in parallel.
Ignore this! (I was forgetting to add the last distance :( )
I've also recoded the algorithm into C which runs very quickly, but so far I haven't threaded it.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.