摘要:
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Example 2: Example 3: 阅读全文
摘要:
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: 阅读全文