I'm enjoying these creative solutions.
John, I just tried your file exchange solution out of pure curiosity. Your guess is correct; it does score poorly. I also got the error "You may not use the command(s) builtin in your code" for the test cases. All I did was change only the first line to call the function and the variable names with no other checking. I'll do some real work on it now. :-)
Will not solution like this be sooo much slower than simple loops?! Short yes, efficient no.
well, I think I was wrong...This solution is slower if the degree of the polynomial is small but much faster if the degree gets higher...solving polynomials of high degree is really slow with ROOTS.
Swap the input arguments
Back to basics 21 - Matrix replicating
Make a run-length companion vector
Center of mass
Euclidean inter-point distance matrix
Simpsons's rule (but not Homer Simpson)
Counting the Grand Primes
Sums of cubes and squares of sums
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