Top 50 Binary Search Tree Coding Problems for Interviews

Binary Search Trees (BST) are like organized lists that help find, add, and remove items quickly. In our article “Top 50 Binary Search Tree Coding Problems for Interviews“, we have collected a list of 50 coding problems, these problems are designed to boost your problem-solving abilities and prepare you for interviews. By working on these problems, you can become better at using BSTs and excel in coding interviews. Join us on this learning journey and become a pro at solving Binary Search Tree problems!

Top 50 Binary Search Tree Coding Problems for Interviews

Binary Search Tree (BST) Coding Problems for Interviews: Level 1

Problems	Solve
A program to check if a Binary Tree is BST or not	Solve
Count BST nodes that lie in a given range	Solve
Searching in Binary Search Tree (BST)	Solve
Lowest Common Ancestor in a Binary Search Tree.	Solve
K’th Largest Element in BST when modification to BST is not allowed	Solve
Find the node with minimum value in a Binary Search Tree	Solve
Inorder Successor in Binary Search Tree	Solve
Find median of BST	Solve
Binary Tree to Binary Search Tree Conversion	Solve
Count pairs from two BSTs whose sum is equal to a given value x	Solve

Binary Search Tree (BST) Coding Problems for Interviews: Level 2

Problems	Solve
Inorder predecessor and successor for a given key in BST	Solve
Check if a given Binary Tree is a Heap	Solve
Find the closest element in Binary Search Tree	Solve
Number of Unique BST with a given key | Dynamic Programming	Solve
Check whether BST contains Dead End or not	Solve
Print Common Nodes in Two Binary Search Trees	Solve
Sorted Array to Balanced BST	Solve
Find postorder traversal of BST from preorder traversal	Solve
Balance a Binary Search Tree	Solve
Find a pair with given sum in BST	Solve
Check if a given array can represent Preorder Traversal of Binary Search Tree	Solve
Add all greater values to every node in a given BST	Solve
Replace every element with the least greater element on its right	Solve
Sum of Descendant Nodes Below Target in Binary Search Tree	Solve
Find the maximum sum leaf to root path in a Binary Tree	Solve
Leaf nodes from Preorder of a Binary Search Tree	Solve
Convert BST to Max Heap	Solve
Transform a BST to greater sum tree	Solve
Remove BST keys outside the given range	Solve
Count of pairs violating BST property	Solve
Maximum product of an increasing subsequence of size 3	Solve
Lowest Common Ancestor in a Binary Search Tree.	Solve
Pair with minimum absolute difference in BST	Solve
Print Nodes in Top View of Binary Tree	Solve
Deletion in Binary Search Tree (BST)	Solve
Find the largest BST subtree in a given Binary Tree | Set 3	Solve
K’th smallest element in BST using O(1) Extra Space	Solve
Leaf nodes from Preorder of a Binary Search Tree (Using Recursion)	Solve
Two nodes of a BST are swapped, correct the BST	Solve
Find a pair with given sum in a Balanced BST	Solve

Binary Search Tree (BST) Coding Problems for Interviews: Level 3

Problems	Solve
Merge two BSTs with limited extra space	Solve
Optimal Binary Search Tree | DP-24	Solve
Insertion in an AVL Tree	Solve
Sorted Linked List to Balanced BST	Solve
Find the minimum Sub-tree with target sum in a Binary search tree	Solve
Merge Two Balanced Binary Search Trees	Solve
Inversion count in Array Using Self-Balancing BST	Solve
Print BST keys in given Range | O(1) Space	Solve
Maximum Unique Element in every subarray of size K	Solve
Floor and Ceil from a BST	Solve