LeetCode 1603: Design Parking System

Explanation:

• We can simply keep track of the number of available parking slots for each car type (big, medium, small) and decrement the count whenever a car of that type parks.
• When a car tries to park, we check if there are available slots for that car type and return true if parking is successful.
• The constraints ensure that we do not need to worry about exceeding the slot limits.

class ParkingSystem {
    private int[] slots;

    public ParkingSystem(int big, int medium, int small) {
        this.slots = new int[]{big, medium, small};
    }

    public boolean addCar(int carType) {
        if (slots[carType - 1] > 0) {
            slots[carType - 1]--;
            return true;
        }
        return false;
    }
}