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] -> 
Program an exclusive OR operation with logical operators
Getting logical indexes
Getting the absolute index from a matrix
Create a vector
Produce a sine wave
Longest Collatz Sequence
Generalised Hamming Number
How to reverse spdiags ?
Clear all empty variables from the workspace
How many monitors are connected ?
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