Duplicate a character 'n' times.
Example 1: str='a' n=5
Example 2: str='*' n=3
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.
Implement a ROT13 cipher
Remove white space from the string
select the primes of a vector
Moving average (variable kernel length)
Remove entire row and column in the matrix containing the input values
Sort complex numbers into complex conjugate pairs
Change the sign of even index entries of the reversed vector
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