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] -> 
Renaming a field in a structure array
The Hitchhiker's Guide to MATLAB
Clear all empty variables from the workspace
Magic is simple (for beginners)
Decrypt the cypher using XOR encryption (for beginners)
Numbers spiral diagonals (Part 2)
Mirror, mirror on the wall, who is fairest of them all?
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