Understanding the tail call design pattern

The tail call functional design pattern is a subroutine, or a tail-recursive function, that is executed at the end of a procedure. This design pattern is also referred to as the Tail Call Optimization (TCO). The concept of this pattern is straightforward. The tail call is the last call performed by a method.

In the next section, we will implement the tail call functional design pattern.

Programming the tail call design pattern

To demonstrate the tail call functional design pattern, we will implement a Lucky 7 application consisting of a single TailCallExample class. This class will prompt the user for a number and perform multiple mathematical on the number that will result in 7,...