I am wondering how I could separate the ReadMe files

[seungholee-dev]

As the project grows large, What chapters should we have to indexing? we are dealing with this issue on #1

1. Introduction
2. Sorting
3. Searching
4. HashMap
5. HashSet
6. String
7. Two Pointer
8. LinkedList
9. Tree
10. Graph
11. Disjoint Set

If you guys have any idea what to add more, feel free to share :)