C++

1/**
2 * Your ParkingSystem object will be instantiated and called as such:
3 * ParkingSystem* obj = new ParkingSystem(big, medium, small);
4 * bool param_1 = obj->addCar(carType);
5 *
6 * Runtime: 84 ms, faster than 90.67%
7 * Memory Usage: 33.5 MB, less than 7.82%
8 */
9class ParkingSystem {
10  private:
11    int carCapacity[3];
12    int cnt[3];
13  public:
14    ParkingSystem(int big, int medium, int small) {
15      carCapacity[0] = big;
16      carCapacity[1] = medium;
17      carCapacity[2] = small;
18
19      cnt[0] = cnt[1] = cnt[2] = 0;
20    }
21
22    bool addCar(int carType) {
23      return carCapacity[carType-1] > (cnt[carType-1])++;
24    }
25};

Ruby

1# Runtime: 88 ms, faster than 74.36%
2# Memory Usage: 210.5 MB, less than 6.41%
3#
4# Your ParkingSystem object will be instantiated and called as such:
5# obj = ParkingSystem.new(big, medium, small)
6# param_1 = obj.add_car(car_type)
7class ParkingSystem
8  attr_accessor :cnt, :cntCapacity
9
10=begin
11    :type big: Integer
12    :type medium: Integer
13    :type small: Integer
14=end
15  def initialize(big, medium, small)
16    @cntCapacity = [big, medium, small]
17    @cnt = [0, 0, 0]
18  end
19
20=begin
21    :type car_type: Integer
22    :rtype: Boolean
23=end
24  def add_car(car_type)
25    if @cnt[car_type-1] >= @cntCapacity[car_type-1]
26      return false
27    else
28      @cnt[car_type-1] += 1
29      return true
30    end
31  end
32end

JavaScript

1/**
2 * Runtime: 156 ms, faster than 37.73%
3 * Memory Usage: 46.8 MB, less than 20.10%
4 */
5
6let cntCapacity;
7let cnt;
8
9/**
10 * @param {number} big
11 * @param {number} medium
12 * @param {number} small
13 */
14var ParkingSystem = function(big, medium, small) {
15  cntCapacity = [big, medium, small];
16  cnt = [0, 0, 0];
17};
18
19/** 
20 * @param {number} carType
21 * @return {boolean}
22 */
23ParkingSystem.prototype.addCar = function(carType) {
24  if (cntCapacity[carType-1] == cnt[carType-1]) return false;
25  else {
26    cnt[carType-1] += 1;
27    return true;
28  }
29};
30
31/** 
32 * Your ParkingSystem object will be instantiated and called as such:
33 * var obj = new ParkingSystem(big, medium, small)
34 * var param_1 = obj.addCar(carType)
35 */