# TDF_UTILS
## Tree
1. Generic Tree
2. for Organization, Menu, etc..
3. adjacency nodes can be ordered
通用的树，可以用来表现组织架构图等，相邻的组织架构可以强制排序。
## Binary Indexed Tree
## List
1. single list
2. for study only
## Double Linked List
Don't debug list, otherwise stack is overflow