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] -> 
The Goldbach Conjecture, Part 2
Find best placement for ordered dominoes (harder)
Getting the indices from a vector
Are all the three given point in the same line?
Is this triangle right-angled?
Add more zeros
Recycled Numbers (CodeJam Qualification Round 2012)
Numbers spiral diagonals
Mirror, mirror on the wall, who is fairest of them all?
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