wangxiaobao的博客

摘要： 题意： Implement atoi to convert a string to an integer. (Easy) 分析： 就是注意各种特殊情况，边界情况的判断，见代码注释。 阅读全文

摘要： 题意： Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 (Easy) 分析： 思路很简单，注意特殊情况如10,100等和int溢出情况即可； 开始采用的是用一个数组把 阅读全文

摘要： 题意： 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 f 阅读全文

摘要： 题意： Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique lo 阅读全文

摘要： 题目： There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexit 阅读全文

摘要： 题意： Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the 阅读全文

摘要： 题意： You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a sin 阅读全文

摘要： 题目 ：Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would hav 阅读全文

摘要： 深度优先搜索题目总结（poj2386,poj1979, poj3009,poj1321,aoj0033,aoj0118） 阅读全文

摘要： 抽象工厂，组件创建类模式 阅读全文