Given a string s, return true if it is a palindrome after normalization, otherwise return false.

A string is considered a palindrome if:

After converting all uppercase letters to lowercase, and

Removing all non-alphanumeric characters (anything that's not a letter or digit),

The resulting string reads the same forwards and backwards.

Note: Alphanumeric characters include only letters (a-z, A-Z) and digits (0-9).

Example 1:

Input: s = "Able was I, I saw Elba"
Output: true
Explanation: After processing, it becomes "ablewasiisawelba", which is a palindrome.

Example 2:

Input: s = "a car race"
Output: false
Explanation: Forward: "acarrace", Backward: "ecarraca". Since "acarrace" ≠ "ecarraca", the string is not a palindrome.

Example 3:

Input: s = "23bc'e: CB32"
Output: true
Explanation: After converting to lowercase and removing non-alphanumeric characters, it becomes "23bcecb32", which reads the same forward and backward.

Constraints

1 <= s.length <= 2 × 10⁵

s consists only of printable ASCII characters.

16. Is Palindrome