Merge pull request #2581 from aadil42/patch-53

Author: aakhtar3

Diff for: javascript/1603-design-parking-system.js

@@ -0,0 +1,45 @@
+/**
+ * https://leetcode.com/problems/design-parking-system/
+ * @class ParkingSystem
+ * @param {number} big
+ * @param {number} medium
+ * @param {number} small
+ */
+class ParkingSystem {
+  constructor(big, medium, small) {
+    this.isBigRemaining = big;
+    this.isMediumRemaining = medium;
+    this.isSmallRemaining = small;
+  }
+
+  /** 
+   * Time O(1) | Space O(1)
+   * @param {number} carType
+   * @return {boolean}
+   */
+  addCar(carType) {
+    const isBigCarAvailable = (carType === 1 && this.isBigRemaining > 0); 
+    if(isBigCarAvailable) {
+        this.isBigRemaining -= 1;
+        return true;
+    }
+    const isMediumCarAvailable = (carType === 2 && this.isMediumRemaining > 0);
+    if(isMediumCarAvailable) {
+        this.isMediumRemaining -= 1;
+        return true;
+    }
+    const isSmallCarAvailable = (carType === 3 && this.isSmallRemaining > 0);
+    if(isSmallCarAvailable) {
+        this.isSmallRemaining -= 1;
+        return true;
+    }
+    return false;
+  }
+}
+
+
+/** 
+ * Your ParkingSystem object will be instantiated and called as such:
+ * var obj = new ParkingSystem(big, medium, small)
+ * var param_1 = obj.addCar(carType)
+ */