1. BST In Order Traversal

   #Tree#Traversal

2. BST Level Order Traversal

   #Tree#Traversal#BFS

3. BST Post Order Traversal

   #Tree#Traversal

4. BST Pre Order Traversal

   #Tree#Traversal

5. BST Construction

   #Tree#Construction

6. Invert Binary Tree

   #BST#Tree

7. Same Tree

   #Tree#DFS

8. Validate Binary Search Tree

   #Tree#DFS#Recursion