LeetCode 409. Longest Palindrome — JavaScript

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https://leetcode.com/problems/longest-palindrome/description/?envType=daily-question&envId=2024-06-04

var longestPalindrome = function(s) {
    const map = {}
    let ans=0
    for(let i=0; i<s.length;i++) {
        map[s[i]] ? map[s[i]]+=1 : map[s[i]]=1
    }
    Object.values(map).forEach(e=>{
        if(e%2===0) ans+=e
        else ans+=e-1
    })
    return s.length!==ans ? ans+1 : ans
};

even could be palomdrome

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