3442-maximum-difference-between-even-and-odd-frequency-i

DevGod

Elf Vtuber

Caution

DevGod needs to write an editorial for this problem!

js

/**
 * @param {string} s
 * @return {number}
 */
var maxDifference = function(s) {
    let count = _.countBy(s);

    let maxOdd = Math.max(
        ...Object.values(count).filter(
            (el)=> el%2 == 1
        )
    );

    let minEven = Math.min(
        ...Object.values(count).filter(
            (el)=> el%2 == 0
        )
    );

    return maxOdd - minEven;
};