问去掉switch语句

EN

private static final Double FIRST_HOUR_COST = 1.0;
private static final Double SECOND_HOUR_COST = 2.0;
private static final Double CONVERSION_RATE = 1.5

@Override
public double calculateReservationCost(Reservation reservation)
{
    int hours = DateUtils.hoursDifference(reservation.getStartTime(), reservation.getStopTime()) + 1;

    switch(hours)
    {
        case 1:
            return FIRST_HOUR_COST;
        case 2:
            return FIRST_HOUR_COST + SECOND_HOUR_COST;
        default:
            return FIRST_HOUR_COST +
                   SECOND_HOUR_COST +
                   countEachNextHour(SECOND_HOUR_COST, 2, hours);
    }
}