From c47b1ec2ccaa35ea89ade0860bc246a10857c1a1 Mon Sep 17 00:00:00 2001
From: koronya <koronya@hanmail.net>
Date: Sun, 12 Apr 2026 19:04:28 +0900
Subject: [PATCH] [JS][6kyu] The Shell Game

---
 codewars/6kyu/the-shell-game/koronya.js | 27 +++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 codewars/6kyu/the-shell-game/koronya.js

diff --git a/codewars/6kyu/the-shell-game/koronya.js b/codewars/6kyu/the-shell-game/koronya.js
new file mode 100644
index 000000000..260dd4d7c
--- /dev/null
+++ b/codewars/6kyu/the-shell-game/koronya.js
@@ -0,0 +1,27 @@
+// [JS][6kyu] The Shell Game
+// the-shell-game
+// https://www.codewars.com/kata/546a3fea8a3502302a000cd2/train/javascript
+
+const findTheBall = (start, swaps) => {
+  let position = start
+  swaps.forEach(([start, end]) => {
+    if (position === start) {
+      position = end
+    } else if (position === end) {
+      position = start
+    }
+  })
+  return position
+}
+
+findTheBall(0, [[0, 1]]) === 1
+findTheBall(1, [[0, 1]]) === 0
+
+// prettier-ignore
+findTheBall(0, [[0, 1], [2, 1], [0, 1]]) === 2
+// prettier-ignore
+findTheBall(0, [[0, 1], [1, 2], [2, 0], [0, 1], [1, 2], [2, 1], [2, 0], [0, 2]]) === 1
+// prettier-ignore
+findTheBall(0, [[0, 2], [1, 0]]) === 2
+// prettier-ignore
+findTheBall(1, [[0, 2], [1, 0]]) === 0