Help with tree recursion

Question

I have a Person class, and I want to create a tree. Here is the contsructor for the Person class.

public Person(String name, int age, char gender, Person c1         


        

Answer 1

private int count() {
    return 1 + ((this.child1 != null) ? (this.child1.count()) : (0)) + ((this.child2 != null) ? (this.child2.count()) : (0));
}