**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!