Create design-parking-system.cpp

Author: kamyu104

C++/design-parking-system.cpp

@@ -0,0 +1,20 @@
+// Time:  O(1)
+// Space: O(1)
+
+class ParkingSystem {
+public:
+    ParkingSystem(int big, int medium, int small)
+     : space_{0, big, medium, small} {
+    }
+    
+    bool addCar(int carType) {
+        if (space_[carType] > 0) {
+            --space_[carType];
+            return true;
+        }
+        return false;
+    }
+
+private:
+    vector<int> space_;
+};