Merge pull request neetcode-gh#1518 from aadil42/patch-27

Create 535-encode-and-decode-tinyurl.js

Author: Ahmad-A0

javascript/535-encode-and-decode-tinyurl.js

@@ -0,0 +1,24 @@
+// problem link https://leetcode.com/problems/encode-and-decode-tinyurl
+// time complexity O(1)
+
+
+const encodeMap = new Map();
+const decodeMap = new Map();
+const base = 'http://tinyurl.com/';
+
+var encode = function(longUrl) {
+    let shortUrl = ''
+    if(!encodeMap.has(longUrl)) {
+            shortUrl = (base + encodeMap.size + 1).toString();
+            encodeMap.set(longUrl, shortUrl);
+            decodeMap.set(shortUrl, longUrl);
+        } else {
+            return encodeMap.has(longUrl);
+        }
+
+        return shortUrl;
+};
+
+var decode = function(shortUrl) {
+    return decodeMap.get(shortUrl);
+};