RT[字数补丁]
This is written in great detailhttp://www.ruanyifeng.com/blog/2012/08/how_to_read_diff.html
Longest common subsequence problem
It is a classic computer science problem, the basis of file comparison programs such as diff
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
This is written in great detail
http://www.ruanyifeng.com/blog/2012/08/how_to_read_diff.html
Longest common subsequence problem