From 629a24d8b0d7eeceb4bbe85e200dcedf1687132d Mon Sep 17 00:00:00 2001
From: Skoulskiy <ogurethcs@gmail.com>
Date: Thu, 18 Jun 2026 15:16:55 +0300
Subject: [PATCH] added solution

---
 src/formatDate.js | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/formatDate.js b/src/formatDate.js
index 769e27661..78b77903d 100644
--- a/src/formatDate.js
+++ b/src/formatDate.js
@@ -8,6 +8,33 @@
  * @returns {string}
  */
 function formatDate(date, fromFormat, toFormat) {
+  const separatorFrom = fromFormat[3];
+  const separatorTo = toFormat[3];
+
+  const dateParts = date.split(separatorFrom);
+  const dateMap = {};
+
+  for (let i = 0; i < fromFormat.length - 1; i++) {
+    dateMap[fromFormat[i]] = dateParts[i];
+  }
+
+  if (toFormat.includes('YYYY') && fromFormat.includes('YY')) {
+    const yearStr = dateMap['YY'];
+
+    dateMap['YYYY'] = dateMap['YY'] < 30 ? '20' + yearStr : '19' + yearStr;
+  }
+
+  if (toFormat.includes('YY') && fromFormat.includes('YYYY')) {
+    dateMap['YY'] = dateMap['YYYY'].slice(-2);
+  }
+
+  const newDate = [
+    dateMap[toFormat[0]],
+    dateMap[toFormat[1]],
+    dateMap[toFormat[2]],
+  ].join(separatorTo);
+
+  return newDate;
   // write code here
 }