The sorted coefficients in your example should be [1; 4; 3; -2].
The test suite is also comparing against an incorrect result in the last problem.
Find the palindrome
Replace May with April
Get the length of a given vector
Generate a string like abbcccddddeeeee
Mirror Image matrix across anti-diagonal
Fangs of a vampire number
Find all vampire fangs
Product of two multivariate polynomials
Multivariate polynomials - convert monomial form to array
Outer product of multiple vectors
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