/*
 * @lc app=leetcode id=5 lang=javascript
 *
 * [5] Longest Palindromic Substring
 *
 * https://leetcode.com/problems/longest-palindromic-substring/description/
 *
 * algorithms
 * Medium (26.70%)
 * Total Accepted:    525K
 * Total Submissions: 1.9M
 * Testcase Example:  '"babad"'
 *
 * Given a string s, find the longest palindromic substring in s. You may
 * assume that the maximum length of s is 1000.
 * 
 * Example 1:
 * 
 * 
 * Input: "babad"
 * Output: "bab"
 * Note: "aba" is also a valid answer.
 * 
 * 
 * Example 2:
 * 
 * 
 * Input: "cbbd"
 * Output: "bb"
 * 
 * 
 */
/**
 * @param {string} s
 * @return {string}
 */
var longestPalindrome = function(s) {
    // tag: 字符串问题
};