1. [约瑟夫环](https://github.com/lambdaplus/python/blob/master/Algorithm/joseph-ring.py)
2. [寻找两个链表的第一个交点](https://www.zybuluo.com/Scrazy/note/719335)
3. [删除链表中的重复元素](https://www.zybuluo.com/Scrazy/note/720542)
4. [数组中的数组成最小值](https://www.zybuluo.com/Scrazy/note/720582)
5. [索引为index 的丑数](https://www.zybuluo.com/Scrazy/note/720587)
6. [反转链表](https://www.zybuluo.com/Scrazy/note/721436)