slots of size 3 in the constructor, where slots[0], slots[1], and slots[2] represent the number of available slots for big, medium, and small cars, respectively.addCar method, check if there is an available slot for the given carType by checking if slots[carType - 1] is greater than 0.slots[carType - 1] by 1 to indicate that a slot has been taken and return true.false without modifying the array.