Solution: Valid Palindrome
Explore how to verify if a given string is a palindrome by applying the two-pointer technique. This lesson guides you through efficiently skipping non-alphanumeric characters and comparing letters while ignoring case differences. Understand how to implement this approach with optimal time and space complexity, enabling you to handle strings with varied characters correctly and effectively.
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...