Add solution #2727

Author: JoshCrozier

README.md

@@ -487,6 +487,7 @@
 2722|[Join Two Arrays by ID](./2722-join-two-arrays-by-id.js)|Medium|
 2723|[Add Two Promises](./2723-add-two-promises.js)|Easy|
 2724|[Sort By](./2724-sort-by.js)|Easy|
+2727|[Is Object Empty](./2727-is-object-empty.js)|Easy|
 3042|[Count Prefix and Suffix Pairs I](./3042-count-prefix-and-suffix-pairs-i.js)|Easy|
 3110|[Score of a String](./3110-score-of-a-string.js)|Easy|
 3223|[Minimum Length of String After Operations](./3223-minimum-length-of-string-after-operations.js)|Medium|

solutions/2727-is-object-empty.js

@@ -0,0 +1,20 @@
+/**
+ * 2727. Is Object Empty
+ * https://leetcode.com/problems/is-object-empty/
+ * Difficulty: Easy
+ *
+ * Given an object or an array, return if it is empty.
+ *
+ * - An empty object contains no key-value pairs.
+ * - An empty array contains no elements.
+ *
+ * You may assume the object or array is the output of JSON.parse.
+ */
+
+/**
+ * @param {Object|Array} obj
+ * @return {boolean}
+ */
+var isEmpty = function(obj) {
+  return !Object.keys(obj).length;
+};