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] -> 
Choose the best fitting dominoes
Is the Point in a Circle?
Find a subset that divides the vector into equal halves
Reindex a vector
Magic is simple (for beginners)
Mirror, mirror on the wall, who is fairest of them all?
Numbers spiral diagonals
Two functions (to be sure)
Clear all empty variables from the workspace
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