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.
Make the vector [1 2 3 4 5 6 7 8 9 10]
Extract leading non-zero digit
Matrix indexing with two vectors of indices
Convert a vector into a number
Change the sign of even index entries of the reversed vector
Moving average (variable kernel length)
Symmetry of vector
Sort complex numbers into complex conjugate pairs
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