import java.util.*;
/**
 * 
 * 
 * @author Chris Thiel
 * @version 8 may 2008
 */
public class Trip
{
  // instance variables 
  private ArrayList<Flight> flights;
  
  /**
   * Constructor for objects of class Trip
   */
  public Trip()
  {
    flights = new ArrayList<Flight>();
  }
  
  /** @return the number of minutes from the departure of the
    * first flight to the arrival
    * of the last flight if there are one or more flights 
    * in the trip;
    * 0, if there are no flights in the trip
    */
  public int getDuration()
  {
    // part a
  }
 
  /** @return the number of minutes from the departure of the 
    * first flight to the arrival of the last flight if there 
    * are one or more flights in the trip;
    * 0, if there are no flights in the trip
    */
  public int getShortestLayover()
  {
    // part b
  }
  
  public void add(Flight f)
  {
    flights.add(f);
  }
  
  public static void main(String[] args)
  {
    Trip empty= new Trip();
    Trip vacation=new Trip();
    vacation.add(new Flight(new Time(11,30), new Time(12,15)));
    vacation.add(new Flight(new Time(13,15), new Time(15,45)));
    vacation.add(new Flight(new Time(16,0), new Time(18,45)));
    vacation.add(new Flight(new Time(22,15), new Time(23,0)));
    System.out.println("Empty duration "+empty.getDuration());
    System.out.println("Vacation duration: "+vacation.getDuration());
    System.out.println("Empty Shortest Layover: "+empty.getShortestLayover());
    System.out.println("Vacation Shortest Layover: "+vacation.getShortestLayover());
  }

}