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#1603 - Design Parking System
Problem Description
Design a parking system for a parking lot. The parking lot has three kinds of parking spaces: big, medium, and small, with a fixed number of slots for each size.
Implement the ParkingSystem class:
- ParkingSystem(int big, int medium, int small) Initializes object of the ParkingSystem class. The number of slots for each parking space are given as part of the constructor.
- bool addCar(int carType) Checks whether there is a parking space of carType for the car that wants to get into the parking lot. carType can be of three kinds: big, medium, or small, which are represented by 1, 2, and 3 respectively. A car can only park in a parking space of its carType. If there is no space available, return false, else park the car in that size space and return true.
Solution
/**
* @param {number} big
* @param {number} medium
* @param {number} small
*/
var ParkingSystem = function(big, medium, small) {
this.spaces = { 1: big, 2: medium, 3: small };
};
/**
* @param {number} carType
* @return {boolean}
*/
ParkingSystem.prototype.addCar = function(carType) {
if (this.spaces[carType] > 0) {
this.spaces[carType]--;
return true;
}
return false;
};