The MusicDownloads problem from the 2013 AP Computer Science Exam is typical of free response problems that test lists.

The TokenPass problem from the 2013 AP Computer Science Exam is typical of free response problems that test arrays.

The GridWorldUtilities and JumpingCritter problem from the 2011 AP Computer Science Exam is typical of free response problems that test GridWorld: The AP Computer Science Case Study. The problem requires you to loop through each location in a bounded grid. The problem also requires you to extend the Critter class, determine which methods to override, ...

The Skyview problem from the 2013 AP Computer Science Exam is typical of free response problems that test 2 dimensional arrays.