Implement format date task

src/formatDate.js

@@ -8,7 +8,46 @@
  * @returns {string}
  */
 function formatDate(date, fromFormat, toFormat) {
-  // write code here
+  const formatedDate = [];
+  const datArr = date.split(fromFormat[fromFormat.length - 1]);
+
+  const dateObj = {};
+
+  for (let i = 0; i < datArr.length; i++) {
+    if (fromFormat[i].startsWith('Y')) {
+      dateObj.year = datArr[i];
+    } else if (fromFormat[i].startsWith('M')) {
+      dateObj.month = datArr[i];
+    } else if (fromFormat[i].startsWith('D')) {
+      dateObj.day = datArr[i];
+    }
+  }
+
+  const needYearLength = toFormat.find((el) => el.startsWith('Y')).length;
+
+  if (dateObj.year.length !== needYearLength) {
+    const shortYear = dateObj.year.slice(-2);
+
+    if (needYearLength === 2) {
+      dateObj.year = shortYear;
+    } else {
+      dateObj.year = shortYear < 30 ? 20 + shortYear : 19 + shortYear;
+    }
+  }
+
+  const dateSeparator = toFormat.at(-1);
+
+  for (const partDate of toFormat) {
+    if (partDate.startsWith('Y')) {
+      formatedDate.push(dateObj.year);
+    } else if (partDate.startsWith('M')) {
+      formatedDate.push(dateObj.month);
+    } else if (partDate.startsWith('D')) {
+      formatedDate.push(dateObj.day);
+    }
+  }
+
+  return formatedDate.join(dateSeparator);
 }
 
 module.exports = formatDate;