More Problems

• 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.
• Check if a binary tree is a complete binary tree.
• Find the maximum width of a binary tree.
• Count the number of nodes at a specific level in a binary tree.