More Problems

• Implement a function to print the pre-order traversal of a binary tree using a stack.
• Write a program to find the longest path in a binary search tree.
• Implement a function to check if a binary search tree is height-balanced.
• Write a program to find the number of odd leaf nodes in a binary tree.
• Implement a function to find the number of even leaf nodes in a binary tree.
• Write a program to find the first unique node in a binary search tree.
• Implement a function to find all duplicate subtrees in a binary tree.
• Write a program to find the first leaf node in a binary tree.