Now runs with f1, f2 in certain orientation only once for a given input. Does not arbritrarily switch
for given values of ave1, ave2.

It counts the # of instances that ave1 > ave2. If ave1 > ave2 for half or more of the array, it does
f1, f2; otherwise it will switch the order of f1 and f2 in calling the 3 point correlation function.