Trivial. Put the code INSIDE function. LEARN TO USE FUNCTIONS!!!!!! LEARN TO USE FUNCTIONS! LEARN TO USE FUNCTIONS! There, I said it three times, so it must be true.
Next set up a loop. Run the loop 2 times, or 4 times, or 8 times. As many times as you wish. Something like this:
ncalls = [2 4 8];
for n = 1:numel(ncalls)
for m = 1:ncalls(n)
outputstuff = mycode(inputstuff)
end
end
You don't say what you want your code to do, or what it returns. But save some information if you want, whatever.