Top 75+ Binary Tree Data Structure Interview Problems

Binary Tree Data Structure Interview Questions

• Inorder Tree Traversal
• Preorder Tree Traversal
• Postorder Tree Traversal
• Check if two binary trees are identical or not
• Print bottom view of a binary tree
• Print top view of a binary tree
• In-place convert a binary tree to its sum tree
• Determine whether the given binary tree nodes are cousins of each other
• Print cousins of a given node in a binary tree
• Check if a binary tree is a sum tree or not
• Combinations of words formed by replacing given numbers with corresponding alphabets
• Determine whether a binary tree is a subtree of another binary tree
• Find the diameter of a binary tree
• Check if a binary tree is symmetric or not
• Convert a binary tree to its mirror
• Determine if a binary tree can be converted to another by doing any number of swaps of children
• Find the Lowest Common Ancestor (LCA) of two nodes in a binary tree
• Print all paths from the root to leaf nodes of a binary tree
• Find ancestors of a given node in a binary tree
• Find distance between given pairs of nodes in a binary tree
• Find the diagonal sum of a binary tree
• Sink nodes containing zero to the bottom of a binary tree
• Convert a binary tree to a full tree by removing half nodes
• Truncate a binary tree to remove nodes that lie on a path having a sum less than `k`
• Find maximum sum root to leaf path in a binary tree
• Check if a binary tree is height-balanced or not
• Convert binary tree to Left-child right-sibling binary tree
• Print all paths from leaf to root node of a binary tree
• Iteratively print the leaf to root path for every leaf node in a binary tree
• Build a binary tree from a parent array
• Find all nodes at a given distance from leaf nodes in a binary tree
• Count all subtrees having the same value of nodes in a binary tree
• Find the maximum difference between a node and its descendants in a binary tree
• Find the maximum sum path between two leaves in a binary tree
• Construct a binary tree from inorder and preorder traversal
• Construct a binary tree from inorder and postorder traversals
• Construct a binary tree from inorder and level order sequence
• Construct a full binary tree from the preorder sequence with leaf node information
• Construct a full binary tree from a preorder and postorder sequence
• Find postorder traversal of a binary tree from its inorder and preorder sequence
• Set next pointer to the inorder successor of all nodes in a binary tree
• Find preorder traversal of a binary tree from its inorder and postorder sequence
• Find the difference between the sum of all nodes present at odd and even levels in a binary tree
• Clone a binary tree with random pointers
• Threaded Binary Tree — Overview and Implementation
• Determine if a binary tree satisfies the height-balanced property of a red–black tree
• Construct an ancestor matrix from a binary tree
• Find all possible binary trees having the same inorder traversal
• Perform boundary traversal on a binary tree
• Check if each node of a binary tree has exactly one child
• Evaluate a Binary Expression Tree
• Construction of an expression tree
• Fix children-sum property in a binary tree
• Maximum path sum in a binary tree
• Create a mirror of an m–ary tree
• Print a two-dimensional view of a binary tree
• Construct a binary tree from an ancestor matrix
• Determine whether a given binary tree is a BST or not
• Find inorder successor for the given key in a BST
• Fix a binary tree that is only one swap away from becoming a BST
• Find the size of the largest BST in a binary tree
• Print binary tree structure with its contents in C++
• Maximum Independent Set Problem
• Huffman Coding Compression Algorithm
• Construct a Cartesian tree from an inorder traversal
• Calculate the height of a binary tree with leaf nodes forming a circular doubly linked list
• Link nodes present in each level of a binary tree in the form of a linked list
• Convert a ternary tree to a doubly-linked list
• Extract leaves of a binary tree into a doubly-linked list
• Find the vertical sum of a binary tree
• In-place convert a binary tree to a doubly-linked list
• Check whether the leaf traversal of given binary trees is the same or not
• Efficiently print all nodes between two given levels in a binary tree
• Calculate the height of a binary tree
• Delete a binary tree
• Level order traversal of a binary tree
• Spiral order traversal of a binary tree
• Reverse level order traversal of a binary tree
• Print all nodes of a perfect binary tree in a specific order
• Print left view of a binary tree
• Find the next node at the same level as the given node in a binary tree
• Check if a binary tree is a complete binary tree or not
• Print diagonal traversal of a binary tree
• Print corner nodes of every level in a binary tree
• Invert Binary Tree
• Convert a binary tree into a doubly-linked list in spiral order
• Check if a binary tree is a min-heap or not
• Invert alternate levels of a perfect binary tree
• Perform vertical traversal of a binary tree
• Compute the maximum number of nodes at any level in a binary tree
• Print right view of a binary tree
• Find the minimum depth of a binary tree
• Depth-First Search (DFS) vs Breadth-First Search (BFS)
• Print nodes of a binary tree in vertical order

After solving all the above Binary Trees related coding problem , you will master the Binary tree Data Structure and will definitely ace your coding interview!