More Problems

• Implement a function to check if a binary tree is a mirror of itself.
• Write a program to find the sum of all nodes at even levels in a binary tree.
• Implement a function to find the sum of all nodes at odd levels in a binary tree.
• Write a program to find all paths in a binary tree that sum to a given value.
• Implement a function to check if a binary tree is a perfect binary tree.
• Write a program to find the longest leaf-to-leaf path in a binary tree.
• Implement a function to calculate the total number of leaves in a binary tree.
• Write a program to check if a binary tree is a valid binary search tree based on properties.