389-Find-the-Difference.js

/**
 * @param {string} s
 * @param {string} t
 * @return {character}
 */
const findTheDifference = (s, t) => {
    s = s.split('').sort().join('');
    t = t.split('').sort().join('');

    for (let i = 0; i < t.length; i++) {
        if (t[i] !== s[i]) return t[i];
    }
};