This problem needs an update due to changes in scoring system in Cody
You need to specify the comparison method when sorting complex numbers. Any change done to the order of elements currently creates an invalid solution (even sorting elements), and I guess the one that you want is 'real'. Or don't use complex numbers and create pair of values [x,y]. I've commented my solution. Futhermore, the function calculateSize no longer exists.
DNA N-Gram Distribution
Check if sorted
Sum of diagonal of a square matrix
CONVERT TAN TO SIN
Calculate the derivative of a polynomial
dir with recursive subdirectory search
Generate a random matrix A of (1,-1)
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