Hi. You need to remove all special characters. Did you do the Palindrome checker? You had to remove all non alphanumeric characters in that task, so that should work.
Hi, it seems like you should remove all special characters, so you can create a regex for all characters that are not letters (uppercase or lowercase) or numbers, read about that
Try to use .replaceAll method as well, because you need to find all of them
Think about returning your result from the function