# Leetcode 409. Longest Palindrome

## ASCII hashmaping solution

[Leetcode offical solution](https://leetcode.cn/problems/longest-palindrome/solution/zui-chang-hui-wen-chuan-by-leetcode-solution/)


class Solution:
    def longestPalindrome(self, s: str) -> int:
        ans = 0 
        ords = [0] * 128
        for string in s:
            ords[ord(string)] += 1
        for order in ords:
            ans += order // 2 * 2
            if order % 2 == 1 and ans % 2 == 0:
                ans += 1
        return an