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] -> 
Find a subset that divides the vector into equal halves
Close MATLAB with keyboard
Find nth maximum
Connect blocks in a model
Numbers spiral diagonals (Part 2)
How to reverse spdiags ?
Mysterious digits operation (easy)
Permute diagonal and antidiagonal
Decrypt the cypher using XOR encryption (for beginners)
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