2016 AP CS A Exam Free Response Solutions

The 2016 AP Computer Science A Free Response problems are exceptionally long. They are also more challenging than most years.

The RandomLetterChooser constructor requires a call to a static method within a call to a superclass constructor. Although this is legal, it is unusual.

The LogMessage method containsWord is easy with a specific approach (calling indexOf with appropriate parameters); otherwise, it is more challenging.

Crossword requires both a simple method an a moderately complex constructor than includes initialization of a 2D array.

The StringFormatter method basicGapWidth requires careful attention to detail. The format requires the use of helper methods and a moderately complex algorithm, also with attention to detail.