Explaination

Binary Tree Representation in C++

Binary Tree Representation in Java

Preorder postorder Inorder

Easy

MaxSum through the paths…

Check for BST

kth smallest in the tree

Pair Sum in BST

Fixing Two nodes of a BST

k largest elements(heap)

Find the maximum diameter

Medium

Balanced Binary Tree

Symetric Tree

Right/Left view of binary tree

Buttom view of the binary tree

Level Order Traversal