Write a function that has the following property: f(f(x)) = -x for any numeric array x.
Note that there is no restriction on the output for f(x). How bizarre can you make it?
This one really surprised me.
Getting a little silly!
Clean the List of Names
Sum of first n terms of a harmonic progression
Get the length of a given vector
Check if number exists in vector
04 - Scalar Equations 2
Multivariate polynomials - overload multiplication
Multivariate polynomials - sort monomials
Find all vampire fangs
Find vampire numbers
Multivariate polynomials - convert monomial form to array
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