James Pan

原题网址：https://leetcode.com/problems/longest-palindromic-substring/ Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there e

原题网址：https://leetcode.com/problems/maximum-subarray/ Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [−2,1