Calculate shortest distance using Java API

Calculate shortest distance using Java API

Efficiently calculate the shortest distance between two Facebook users given an API endpoint that returns all friends of a given user.

Solution: Please have java program below to calculate it:

package com.javahonk;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;


public class FindShortestLength {

    public static void main(String[] args) {
        
        List<Person> list = addPerson();
        
        Collections.sort(list, new Person());

        for (Person person1 : list) {
            System.out.println("Friend Name: " + person1.getName()
                    + " Distance: " + person1.getDistance());
        }

    }

    static List<Person> addPerson() {
        
        List<Person> list = new ArrayList<Person>();
        Person person = new Person();
        person.setDistance(200);
        person.setName("A");
        list.add(person);

        person = new Person();
        person.setDistance(2000);
        person.setName("B");
        list.add(person);

        person = new Person();
        person.setDistance(100);
        person.setName("C");
        list.add(person);
        
        return list;        

    }

}

class Person implements Comparator<Person> {

    String name;
    int distance;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getDistance() {
        return distance;
    }

    public void setDistance(int distance) {
        this.distance = distance;
    }

    @Override
    public int compare(Person o1, Person o2) {
        
        return o1.distance - o2.distance;
    }

}

Output: