The MasterOrder problem from the 2010 AP Computer Science Exam is typical of free response problems that test Lists. The problem requires you to manipulate a List and the objects inside.

The APLine problem from the 2010 AP Computer Science Exam is unusually easy. The problem requires you to write a simple class in response to a prompt that contains client code.

The Trail problem from the 2010 AP Computer Science Exam is typical of free response problems that test arrays. The problem requires you to find the minimum and maximum in an array and access 2 elements of an array for each loop run.

The GridChecker problem from the 2010 AP Computer Science Exam is typical of free response problems that test GridWorld: The AP Computer Science Case Study. The problem requires you to run multiple methods of the Grid interface with correct implicit and explicit parameters and to handle the return types.