摘要：
1 题目：The string"PAYPALISHIRING"is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed fo... 阅读全文
2015年6月5日
摘要：
1 题目：Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longe... 阅读全文