Solution: Valid Palindrome
Explore how to verify if a string is a valid palindrome by using the two pointer technique. Learn to skip non-alphanumeric characters and handle case-insensitive comparisons efficiently within O(n) time and O(1) space complexity.
Statement
Given a string, s, return TRUE if it is a palindrome; otherwise, return FALSE.
A phrase is considered a palindrome if it reads the same backward as forward after converting all uppercase letters to lowercase and removing any characters that are not letters or numbers. Only alphanumeric characters (letters and digits) are taken into account.
Constraints:
s.length...