Add solution #387

Author: JoshCrozier

solutions/0387-first-unique-character-in-a-string.js

@@ -0,0 +1,22 @@
+/**
+ * 387. First Unique Character in a String
+ * https://leetcode.com/problems/first-unique-character-in-a-string/
+ * Difficulty: Easy
+ *
+ * Given a string, find the first non-repeating character in
+ * it and return it's index. If it doesn't exist, return -1.
+ */
+
+/**
+ * @param {string} s
+ * @return {number}
+ */
+var firstUniqChar = function(s) {
+  for (let i = 0; i < s.length; i++) {
+    if (s.indexOf(s.charAt(i)) === s.lastIndexOf(s.charAt(i))) {
+      return i;
+    }
+  }
+
+  return -1;
+};