Part (a)

Write the getDuration method that calculates the total time from departure to arrival.

Solution

public int getDuration()
{
    return arrTime.minutesFrom(depTime);
}

Part (b)

Write the getTotalTime method that calculates the total travel time for all flights in a trip.

Solution

public int getTotalTime()
{
    int total = 0;
    for (Flight f : flights)
    {
        total += f.getDuration();
    }
    return total;
}

Part (c)

Write the getWaitTime method that returns the total layover time between flights.

Solution

public int getWaitTime()
{
    int wait = 0;
    for (int i = 0; i < flights.size() - 1; i++)
    {
        Time arrivalTime = flights.get(i).getArrivalTime();
        Time nextDeparture = flights.get(i + 1).getDepartureTime();
        wait += nextDeparture.minutesFrom(arrivalTime);
    }
    return wait;
}

Key Concepts

Common Mistakes