|
|
|
|
|
|
|
When a method, such as recursivePowerOf2, is used in its own
definition, the method is said to be recursive.
When a method calls itself, the method is said to recurse.
Given a positive, integer argument, there is no danger that
recursivePowerOf2 will recurse forever—calling itself an
infinite number of times—because eventually the argument is counted down
to 0, which recursivePowerOf2 handles directly, without
further
recursion.