import java.util.Comparator;

public class PersonComparator implements Comparator<Person> {
    public int compare(Person p1, Person p2) {
        // We are just sorting by the first letter here.
        // You probably want to do something a little more
        // sophisticated in Lab 5 (hint: String.compareTo).
        return p1.name.charAt(0) - p2.name.charAt(0);
    }
}