day 22 task complete

Author: Sanchitbajaj02

day22/leetcode2619.js

@@ -0,0 +1,17 @@
+// 2619. Array Prototype Last
+// URL -> https://leetcode.com/problems/array-prototype-last
+
+/**
+ * @return {null|boolean|number|string|Array|Object}
+ */
+Array.prototype.last = function () {
+  if (this.length < 1) {
+    return -1;
+  }
+  return this[this.length - 1]
+};
+
+/**
+* const arr = [1, 2, 3];
+* arr.last(); // 3
+*/