Vectorizing, too easy or too hard?
Sort numbers by outside digits
Penny flipping - calculate winning probability (easy)
Volume of a sphere given its surface area
Flip the main diagonal of a matrix
Create a square matrix of multiples
Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
Is this matrix orthogonal?
Find the Kronecker Tensor Product without using KRON
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