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.
How many trades represent all the profit?
Insert zeros into vector
find the maximum element of the matrix
sum of first 'n' terms
Change the sign of even index entries of the reversed vector
Moving average (variable kernel length)
Sort complex numbers into complex conjugate pairs
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