Return how many integer grid points there are inside a 3D sphere of radius r centred at (0,0,0) (including points on the edge).
Neither string operations nor interpolations are allowed!
Finding Perfect Squares
DNA N-Gram Distribution
Calculate the Levenshtein distance between two strings
Min of a Matrix
Length of the hypotenuse
Dots in a Circle
Radial Zernike polynomials
Generalized Laguerre polynomials
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