From 86c65de00efdc81da18306fe5264aefae61b3cce Mon Sep 17 00:00:00 2001
From: Oleksandr Polishchuk <crazy8diamond@gmail.com>
Date: Thu, 12 Dec 2024 12:20:47 +0200
Subject: [PATCH 1/2] Solution

---
 src/formatDate.js | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/formatDate.js b/src/formatDate.js
index 769e2766..cdf45d97 100644
--- a/src/formatDate.js
+++ b/src/formatDate.js
@@ -8,7 +8,25 @@
  * @returns {string}
  */
 function formatDate(date, fromFormat, toFormat) {
-  // write code here
+  const dateParts = date.split(fromFormat[3]);
+  const result = [];
+
+  result[toFormat.indexOf('DD')] = dateParts[fromFormat.indexOf('DD')];
+  result[toFormat.indexOf('MM')] = dateParts[fromFormat.indexOf('MM')];
+
+  let year = fromFormat.includes('YYYY')
+    ? dateParts[fromFormat.indexOf('YYYY')]
+    : dateParts[fromFormat.indexOf('YY')];
+
+  if (!toFormat.includes('YYYY')) {
+    year = year.length > 2 ? year.slice(2, 4) : year;
+    result[toFormat.indexOf('YY')] = year;
+  } else {
+    year = year.length === 2 ? (year < 30 ? `20${year}` : `19${year}`) : year;
+    result[toFormat.indexOf('YYYY')] = year;
+  }
+
+  return result.join(toFormat[3]);
 }
 
 module.exports = formatDate;

From ca2484a4c1cbb005520a1c1a0c1de996dd5177a8 Mon Sep 17 00:00:00 2001
From: Oleksandr Polishchuk <crazy8diamond@gmail.com>
Date: Thu, 12 Dec 2024 12:38:37 +0200
Subject: [PATCH 2/2] BetterSolution

---
 src/formatDate.js | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/formatDate.js b/src/formatDate.js
index cdf45d97..1d85677b 100644
--- a/src/formatDate.js
+++ b/src/formatDate.js
@@ -8,7 +8,18 @@
  * @returns {string}
  */
 function formatDate(date, fromFormat, toFormat) {
-  const dateParts = date.split(fromFormat[3]);
+  function findSeparator(format) {
+    for (let i = 0; i < format.length; i++) {
+      if (!['DD', 'MM', 'YYYY', 'YY'].includes(format[i])) {
+        return format[i];
+      }
+    }
+  }
+
+  const separator = findSeparator(fromFormat);
+  const newSeparator = findSeparator(toFormat);
+  const dateParts = date.split(separator);
+
   const result = [];
 
   result[toFormat.indexOf('DD')] = dateParts[fromFormat.indexOf('DD')];
@@ -26,7 +37,7 @@ function formatDate(date, fromFormat, toFormat) {
     result[toFormat.indexOf('YYYY')] = year;
   }
 
-  return result.join(toFormat[3]);
+  return result.join(newSeparator);
 }
 
 module.exports = formatDate;