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.
Finding Perfect Squares
First non-zero element in each column
Number of Circles in a Number
"Low : High - Low : High - Turn around " -- Create a subindices vector
Insert zeros into vector
Sort complex numbers into complex conjugate pairs
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