How to write a "Big O notation" coding using MATLAB

Hi I would like to write a big O notation code for MATLAB program (medical image segmentation) to analyse time complexity.can anyone give me some example or solution.

Answer 1

[José-Luis]

Is this what you mean:

 axes;
 text(0.5,0.5,'$\mathcal{O}(n\log{}n)$','Interpreter','latex')