Solution: Valid Palindrome
Explore how to determine if a string is a valid palindrome by using two pointers to compare characters while skipping non-alphanumeric symbols and ignoring case. Learn an efficient technique that runs in linear time and constant space, helping you solve palindrome problems optimized for coding interviews.
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...