These files appear here is the same order as they appear in the zyBook.
Note: CA=Challenge Activity.

The following two examples are both based on the same CA.
Note that the order in which you see the examples in any given CA is random.
And there may be one or more examples in addition to these two.
ShelterManager.java is based on CA 17.1.1.
CarStorage.java is also based on CA 17.1.1.

Letters.java is based on CA 17.2.1.
StatePopulations.java is based on PA 17.3.2.
RunDistTimeMap.java is based on zyDE 17.3.1.
AirportCodes.java is based on CA 17.3.1.
BookCollection.java is based on PA 17.4.1.
HashSetAddRemoveResult.java is based on PA 17.4.3.
GuessTheNumbers.java is based on zyDE 17.4.1.
BooksSet.java is based on CA 17.4.1.
ItemsList.java is based on CA 17.5.1.

The following two examples are both based on the same CA.
ToInvite.java is based on CA 17.6.1.
ToDos.java is based on CA 17.6.1.