From 3ee74964c97f3140d45490050eb64514266fe086 Mon Sep 17 00:00:00 2001
From: koronya <koronya@hanmail.net>
Date: Sun, 11 Jan 2026 21:25:44 +0900
Subject: [PATCH] [JS][6kyu] Vowel Recognition

---
 codewars/6kyu/vowel-recognition/koronya.js | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 codewars/6kyu/vowel-recognition/koronya.js

diff --git a/codewars/6kyu/vowel-recognition/koronya.js b/codewars/6kyu/vowel-recognition/koronya.js
new file mode 100644
index 000000000..6c18e3530
--- /dev/null
+++ b/codewars/6kyu/vowel-recognition/koronya.js
@@ -0,0 +1,23 @@
+// [JS][6kyu] Vowel Recognition
+// vowel-recognition
+// https://www.codewars.com/kata/5bed96b9a68c19d394000b1d/train/javascript
+
+const vowelSet = new Set(['a', 'e', 'i', 'o', 'u'])
+const isVowel = (char) => vowelSet.has(char)
+
+const vowelRecognition = (input) => {
+  const str = input.toLowerCase()
+  const strLength = str.length
+  let total = 0
+  for (let i = 0; i < strLength; i += 1 || 0) {
+    if (isVowel(str[i])) {
+      total += (i + 1) * (strLength - i)
+    }
+  }
+  return total
+}
+
+vowelRecognition('bbbb') === 0
+vowelRecognition('baceb') === 16
+vowelRecognition('aeiou') === 35
+vowelRecognition('aeiouAEIOU') === 220