Solution: Valid Palindrome
Explore the two pointer technique to determine if a given string is a valid palindrome by skipping non-alphanumeric characters, handling case insensitivity, and comparing characters inward from both ends. Understand how this method optimizes time and space efficiency over naive approaches.
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...