Is this for-loop vectorizable?

b=1;
for a=2:length(ToneLines)
	if ToneLines(a)-ToneLines(b)>13000
		b=a;
	else
		ToneLines(a)=0;
	end
end
ToneLines=ToneLines(ToneLines>0);

ToneLines is a vector of positive integers sorted from small to large without any equal elements. Is it possible to vectorize this loop for a better performance?

Answer 1

[Bruno Luong]

I don't think sequential search can be vectorizable.

You might improve a bit of the search by implementing dichotomy seach rather than linear.