如果要面试

1. 先看下数据结构
   1. 链表相关 http://blog.csdn.net/luckyxiaoqiang/article/details/7393134
   2. 二叉树相关 http://blog.csdn.net/luckyxiaoqiang/article/details/7518888
   3. 排序相关 http://blog.csdn.net/morewindows/article/details/6684558 
2. 刷一下题，找下手感
   1. leetcode https://github.com/walkwalkwalk/leetcode