From 3033c16bd1b53c5e449c2f21d68e4e603a9b39de Mon Sep 17 00:00:00 2001
From: koronya <koronya@hanmail.net>
Date: Thu, 1 Jan 2026 20:14:10 +0900
Subject: [PATCH] [JS][7kyu] Adding ordinal indicator suffixes to numbers

---
 .../koronya.js                                | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 codewars/6kyu/adding-ordinal-indicator-suffixes-to-numbers/koronya.js

diff --git a/codewars/6kyu/adding-ordinal-indicator-suffixes-to-numbers/koronya.js b/codewars/6kyu/adding-ordinal-indicator-suffixes-to-numbers/koronya.js
new file mode 100644
index 000000000..dbec32f9b
--- /dev/null
+++ b/codewars/6kyu/adding-ordinal-indicator-suffixes-to-numbers/koronya.js
@@ -0,0 +1,23 @@
+// [JS][7kyu] Adding ordinal indicator suffixes to numbers
+// adding-ordinal-indicator-suffixes-to-numbers
+// https://www.codewars.com/kata/52dca71390c32d8fb900002b/train/javascript
+
+const numberToOrdinal = (n) => {
+  if (n === 0) {
+    return '0'
+  }
+  const suffixes = ['th', 'st', 'nd', 'rd']
+  const v = n % 100
+  return n + (suffixes[(v - 20) % 10] || suffixes[v] || suffixes[0])
+}
+
+numberToOrdinal(0) === '0'
+numberToOrdinal(1) === '1st'
+numberToOrdinal(2) === '2nd'
+numberToOrdinal(3) === '3rd'
+numberToOrdinal(4) === '4th'
+numberToOrdinal(11) === '11th'
+numberToOrdinal(12) === '12th'
+numberToOrdinal(13) === '13th'
+numberToOrdinal(14) === '14th'
+numberToOrdinal(21) === '21st'