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.
Remove all the consonants
Find state names that start with the letter N
Set some matrix elements to zero
How many monitors are connected ?
Join Strings with Multiple Different Delimiters
Fangs of a vampire number
Outer product of multiple vectors
Find all vampire fangs
Multivariate polynomials - convert monomial form to array
Product of two multivariate polynomials
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