It seems easy, but...
You cannot use +, -, plus, diff, cumsum, *, prod, times, etc.
conv([x y],[1 1],'valid') will not work as it contains STRINGS !!
Very witty solution.
Make a run-length companion vector
Is it an Armstrong number?
Do Fast Fourier Transformation
Sum the 'edge' values of a matrix
Wien's displacement law
Create an n-by-n null matrix and fill with ones certain positions
RGB to CMYK
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