The output of * operator in this solution is a struct, rather than a mPoly object. Nevertheless, the test suite does not check the type of the output.
L Y Cao, since you're such a wizard with indices, I'd love to see you solve this without converting to the array form. It would be interesting to compare the approaches.
Andrew Newell, thanks for your advice.
Make a checkerboard matrix
Find the palindrome
Determine if a Given Number is a Triangle Number
Project Euler: Problem 9, Pythagorean numbers
Longest run of consecutive numbers
Negation the hard way
Multivariate polynomials - sort monomials
Multivariate polynomials - emulate symbolic form
Product of two multivariate polynomials
Find vampire numbers
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