[LeetCode 5]Longest Palindromic Substring 最长回文子串问题描述:给定一个字符串 s，找到 s 中最长的回文子串。你可以假设 s 的最大长度为1000。 说明：解集不能包含重复的子集。 示例1:123输入: "babad"输出: &qu ...

[LeetCode 3]Longest Substring Without Repeating Characters 无重复字符的最长子串Problem description:Given a string, find the length of the longest substring with ...

浏览器下载文件solution:读取文件,设置响应头，写入返回的流前端用http请求而不能用ajax请求(JQuery的ajax函数的返回类型只有xml、text、json、html等类型，没有“流”类型，所以我们要实现ajax下载，不能够使用相应的ajax函数进行文件下载。) （前端用a标签自动点 ...

[LeetCode 377]Combinatiion Sum IV 组合总和 IVProblem decription:Given an integer array with all positive numbers and no duplicates, find the number of pos ...

[LeetCode 394]Decode String 字符串解码Problem decription:Given an encoded string, return it’s decoded string. The encoding rule is: k[encoded_string], wher ...

[LeetCode 393]UTF-8 Validation UTF-8 编码验证Problem description:A character in UTF8 can be from 1 to 4 bytes long, subjected to the following rules: For ...

[LeetCode 363] Max Sum of Rectangle No Larger Than KProblem description:Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rec ...

[LeetCode 70]Climbing Stairs 爬楼梯Problem description:You are climbing a stair case. It takes n steps to reach to the top. Each time you can either clim ...

[LeetCode 48]Rotate Image 旋转图像Problem description:You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). ...

[LeetCode 78]Subsets 子集Problem description:Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set ...