Search:

If you are working on the totalCredits() method now, there probably isn't any need to post the other code.
What is the method supposed to return? How does it find/compute that value?
Where are...

What are the steps the code must take to do that?

What is the IDEA behind the code that was posted? Do you have a list of steps the code is supposed to do to solve the problem?

Please explain why you think something is missing. Is the output wrong?