Update README.md

Author: ninechapter-algorithm

README.md

@@ -32,11 +32,12 @@
 
 **建议关注我的公众号“九章算法”** ，里面都是高质量的原创文章，除了分享最新岗位招聘信息，还有很多就业求职的干货内容的分享。
 
-<插入链接/二维码>
+![公众号二维码.jpg](https://upload-images.jianshu.io/upload_images/25534388-6c844bd000f9deca.jpg?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
+
 
 也欢**迎关注我的知乎“九章算法”**，里面有很多技术，技巧相关的文章内容分享。关注它们绝对不会吃亏，只会让你不断涨知识！
 
-<插入链接/二维码>
+[点击关注]（https://www.zhihu.com/people/crackinterview）
 
 先不多说了，我直接上我整理的高频知识点，感受一下大厂面试到底都考那些东西！
 
@@ -51,26 +52,29 @@
 
 [线段树知识点总结](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E4%B8%8E%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/%E7%BA%BF%E6%AE%B5%E6%A0%91%E7%9F%A5%E8%AF%86%E7%82%B9%E6%80%BB%E7%BB%93.md)
 
-[动态规划十问十答](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E4%B8%8E%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/%E5%8A%A8%E6%80%81%E8%A7%84%E5%88%92%E5%8D%81%E9%97%AE%E5%8D%81%E7%AD%94.md)
 
-- **算法**
+- **算法思维**
+>[二分法](https://github.com/ninechapter-algorithm/ninechapter-algorithm/tree/master/%E7%AE%97%E6%B3%95%E6%80%9D%E7%BB%B4%E9%A2%98/%E4%BA%8C%E5%88%86%E6%B3%95)
 
 - **动态规划**
 
+>[动态规划十问十答](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E4%B8%8E%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/%E5%8A%A8%E6%80%81%E8%A7%84%E5%88%92%E5%8D%81%E9%97%AE%E5%8D%81%E7%AD%94.md)
+
+
 - **系统设计**
 
-[如何答好面试中的系统设计题](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%20Syestem%20Design/%E5%A6%82%E4%BD%95%E7%AD%94%E5%A5%BD%E9%9D%A2%E8%AF%95%E4%B8%AD%E7%9A%84%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%E9%A2%98.md)
+>[如何答好面试中的系统设计题](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%20Syestem%20Design/%E5%A6%82%E4%BD%95%E7%AD%94%E5%A5%BD%E9%9D%A2%E8%AF%95%E4%B8%AD%E7%9A%84%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%E9%A2%98.md)
 
 - **图论**
 
 - **面试高频题**
 
-[Google 面试题 | 原子计数](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%8E%9F%E5%AD%90%E8%AE%A1%E6%95%B0.md)
+>[Google 面试题 | 原子计数](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%8E%9F%E5%AD%90%E8%AE%A1%E6%95%B0.md)
 
-[Google 面试题 | 3个非重复子数组最大和](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%203%E4%B8%AA%E9%9D%9E%E9%87%8D%E5%A4%8D%E5%AD%90%E6%95%B0%E7%BB%84%E6%9C%80%E5%A4%A7%E5%92%8C.md)
+>[Google 面试题 | 3个非重复子数组最大和](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%203%E4%B8%AA%E9%9D%9E%E9%87%8D%E5%A4%8D%E5%AD%90%E6%95%B0%E7%BB%84%E6%9C%80%E5%A4%A7%E5%92%8C.md)
 
-[Google 面试题 | 字典里面的最长单词](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%AD%97%E5%85%B8%E9%87%8C%E9%9D%A2%E7%9A%84%E6%9C%80%E9%95%BF%E5%8D%95%E8%AF%8D.md)
+>[Google 面试题 | 字典里面的最长单词](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%AD%97%E5%85%B8%E9%87%8C%E9%9D%A2%E7%9A%84%E6%9C%80%E9%95%BF%E5%8D%95%E8%AF%8D.md)
 
-[Google 面试题 | 找二叉树最底层最左边的节点](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E6%89%BE%E4%BA%8C%E5%8F%89%E6%A0%91%E6%9C%80%E5%BA%95%E5%B1%82%E6%9C%80%E5%B7%A6%E8%BE%B9%E7%9A%84%E8%8A%82%E7%82%B9.md)
+>[Google 面试题 | 找二叉树最底层最左边的节点](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E6%89%BE%E4%BA%8C%E5%8F%89%E6%A0%91%E6%9C%80%E5%BA%95%E5%B1%82%E6%9C%80%E5%B7%A6%E8%BE%B9%E7%9A%84%E8%8A%82%E7%82%B9.md)
 
-[Google 面试题 | 合法的IP的地址](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%90%88%E6%B3%95%E7%9A%84IP%E7%9A%84%E5%9C%B0%E5%9D%80.md)
+>[Google 面试题 | 合法的IP的地址](https://github.com/ninechapter-algorithm/ninechapter-algorithm/blob/master/%E7%AE%97%E6%B3%95%E9%9D%A2%E8%AF%95%E9%A2%98%E8%A7%A3/Google%20%E9%9D%A2%E8%AF%95%E9%A2%98%20%7C%20%E5%90%88%E6%B3%95%E7%9A%84IP%E7%9A%84%E5%9C%B0%E5%9D%80.md)