Replicate each element of a row vector (with NaN) a constant number of times.
n=2, A=[1 2 3] -> [1 1 2 2 3 3]
n=0, A=[2 1] -> 
Sorted highest to lowest?
Back to basics 9 - Indexed References
Rotate a Matrix
02 - Vector Variables 1
Expression or variable?
Rank of magic square (for beginners)
Negation and new variables
Numbers spiral diagonals (Part 2)
Mirror, mirror on the wall, who is fairest of them all?
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