Valid Palindrome

Valid Palindrome - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com 1. isalnum() class Solution: def isPalindrome(self, s: str) -> bool: stack = [] for char in s: if char.isalnum(): stack.append(char.lower()) if len(stack) % 2 == 1: return stack[:len(stack) // 2] == stack[len(stack)..