Add solution #989

Author: JoshCrozier

0989-add-to-arrayform-of-integer.js

@@ -0,0 +1,21 @@
+/**
+ * 989. Add to Array-Form of Integer
+ * https://leetcode.com/problems/add-to-array-form-of-integer/
+ * Difficulty: Easy
+ *
+ * For a non-negative integer X, the array-form of X is
+ * an array of its digits in left to right order.
+ * For example, if X = 1231, then the array form is [1,2,3,1].
+ *
+ * Given the array-form A of a non-negative integer X,
+ * return the array-form of the integer X+K.
+ */
+
+/**
+ * @param {number[]} A
+ * @param {number} K
+ * @return {number[]}
+ */
+var addToArrayForm = function(A, K) {
+  return String(BigInt(A.join('')) + BigInt(K)).split('');
+};