n is a nonnegative interger.may it be the largest problem that i meet.
My initial solution with repelem(str,n) for n=0 creates a size 1x0 char class but suite only allows for a 0x0 class. Not sure why the difference would matter.
Is it an Armstrong number?
03 - Matrix Variables 1
Vectors counting by 2
Summation of array
Moving average (variable kernel length)
Insert zeros into vector
Symmetry of vector
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