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] -> 
Back to basics 16 - byte order
Back to basics 22 - Rotate a matrix
Longest run of consecutive numbers
Matrix with different incremental runs
Will there be a new leader?
Find indices of diagonal elements
Longest Collatz Sequence
Find the path through the cell
Divisors for big integer
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