Create 0705-design-hashset.js

Solved design-hashset

File(s) Added: 0705-design-hashset.js
Language(s) Used: JavaScript
Submission URL: https://leetcode.com/problems/design-hashset/submissions/647414890/

Author: aadil42

javascript/0705-design-hashset.js

@@ -0,0 +1,40 @@
+
+//https://leetcode.com/problems/design-hashset
+var MyHashSet = function() {
+    this.set = [];
+};
+
+/** 
+ * Time O(1) | Space O(1)
+ * @param {number} key
+ * @return {void}
+ */
+MyHashSet.prototype.add = function(key) {
+    this.set[key] = key;
+};
+
+/** 
+ * Time O(1) | Space O(1)
+ * @param {number} key
+ * @return {void}
+ */
+MyHashSet.prototype.remove = function(key) {
+    this.set[key] = undefined;
+};
+
+/** 
+ * Time O(1) | Space O(1)
+ * @param {number} key
+ * @return {boolean}
+ */
+MyHashSet.prototype.contains = function(key) {
+    return this.set[key] !== undefined;
+};
+
+/** 
+ * Your MyHashSet object will be instantiated and called as such:
+ * var obj = new MyHashSet()
+ * obj.add(key)
+ * obj.remove(key)
+ * var param_3 = obj.contains(key)
+ */