409. Longest Palindrome

https://leetcode.com/problems/longest-palindrome/

Python

from collections import Counter


class Solution:
    def longestPalindrome(self, s: str) -> int:
        counts = Counter(s)

        ans = 0
        odd_presented = 0
        for char, count in counts.items():
            print(char, count)
            if count % 2 == 0:
                ans += count
            else:
                ans += (count-1)
                odd_presented += 1

        if odd_presented > 0:
            ans += 1

        return ans