Add solution #345

Author: JoshCrozier

README.md

@@ -16,6 +16,7 @@
 226|[Invert Binary Tree](./0226-invert-binary-tree.js)|Easy|
 263|[Ugly Number](./0263-ugly-number.js)|Easy|
 264|[Ugly Number II](./0264-ugly-number-ii.js)|Medium|
+345|[Reverse Vowels of a String](./0345-reverse-vowels-of-a-string.js)|Easy|
 387|[First Unique Character in a String](./0387-first-unique-character-in-a-string.js)|Easy|
 451|[Sort Characters By Frequency](./0451-sort-characters-by-frequency.js)|Medium|
 459|[Repeated Substring Pattern](./0459-repeated-substring-pattern.js)|Easy|

solutions/0345-reverse-vowels-of-a-string.js

@@ -0,0 +1,17 @@
+/**
+ * 345. Reverse Vowels of a String
+ * https://leetcode.com/problems/reverse-vowels-of-a-string/
+ * Difficulty: Easy
+ *
+ * Write a function that takes a string as input
+ * and reverse only the vowels of a string.
+ */
+
+/**
+ * @param {string} s
+ * @return {string}
+ */
+var reverseVowels = function(s) {
+  const vowels = s.match(/[aeiou]/ig);
+  return s.replace(/[aeiou]/ig, () => vowels.pop());
+};