More Problems

• Implement a function to serialize and deserialize a binary tree.
• Find the minimum value node in a binary search tree.
• Find the maximum value node in a binary search tree.
• Count the number of internal nodes in a binary search tree.
• Find the in-order predecessor of a node in a binary search tree.
• Find the in-order successor of a node in a binary search tree.
• Check if a binary tree is balanced by comparing heights.
• Find the second minimum value in a binary tree.