# Model a graph of Persons with relationships like "is friend of"

We need to implement a service for building the list of all the
friends of the friends of a person.

class Person {
    String id;
    String name;
}

class Relationship {
  String type;
  String personAId;
  String personBId;
}

class Service {

    static String FRIEND = "friend"

    List<Person> pers;
    List<Relationship> rels;
  
    public List<String> findDirectFriends(Person person) {
        List<String> friendsOf;
         //  
         for (i=0; i<rels.size; i++){
         
             if((rels.get(i).personAId.equals(person.id) || )&& rels.get(i).type.equals(FRIEND)){
             
             //search person by id
             fiendsOf.add(rels.get(i).personBId)
             }
         }
         
         return friendsOf;
    }
    

    String [5] names ={"Laura","Camilo","Harold","Maria","Marta"}; 
   0         1       2        3       4
     
    
    //0,1 
    //1 family
    //2 Friends
    //3 boss
    //0 no related
    
    Person [5][5] relations= {
      L C
   L {1,2,1,2,1},
   C {1,1,2,2,0},
     {1,2,2,0,1}
     {1,1,2,2,0},
     {1,2,2,0,1}
    }; 
    
   for (i=0;i<names[].length,i++){
       
   }
    
    for (int i=0; i<names.length, i++){
        for(){
        
        }
    }
    
}