摘要：
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo... 阅读全文
摘要：
Given an array of strings, group anagrams together.For example, given:["eat", "tea", "tan", "ate", "nat", "bat"],Return:[ ["ate", "eat","tea"], ["na... 阅读全文
摘要：
Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.额，当然我用的就是暴力搜索来，没用到KMP之类的算法... 阅读全文
摘要：
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 font fo... 阅读全文