Solution: Valid Palindrome
Explore how to implement the two pointers technique to validate palindromes efficiently in C++. Understand how to skip non-alphanumeric characters, compare characters case-insensitively, and perform the check in linear time with constant space.
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...