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] -> 
What is the next step in Conway's Life?
Create a two dimensional zero matrix
Area of a Square
Numbers spiral diagonals (Part 2)
Expression or variable?
Mirror, mirror on the wall, who is fairest of them all?
Can you beat the lottery again (for hardcore coder) ?
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