- DSA Problems
Lowest Common Ancestor of a BST
Find the lowest common ancestor in a binary search tree using iterative and recursive approaches with O(log n) time complexity.
- DSA Problems
Delete Node in a BST
Learn how to delete a node from a Binary Search Tree while maintaining BST properties and optimal time complexity.
- DSA Problems
Insert into a BST - Java Solution with Recursive and Iterative Approaches
Complete Java implementation for inserting a value into a Binary Search Tree with both recursive and iterative solutions, including time/space complexity analysis.
- DSA Problems
Kth Smallest Element in a BST - Efficient Tree Traversal Solution
Learn to find the kth smallest element in a Binary Search Tree using iterative inorder traversal with O(h) space complexity.
- DSA Problems
Validate Binary Search Tree Algorithm Solution
Complete Java implementation to validate if a binary tree is a valid BST with optimal time and space complexity considerations.
- DSA Problems
Subtree of Another Tree Java Solution
Complete Java implementation for checking if one binary tree is a subtree of another, including multiple approaches and time complexity analysis.
- DSA Problems
Same Tree and Symmetric Tree Problems in Java
Comprehensive Java solution for same tree and symmetric tree problems including recursive and iterative approaches with time and space complexity analysis.
- DSA Problems
Path Sum II Java Solution with DFS and Backtracking
Complete Java implementation for Path Sum II problem with detailed explanation of DFS approach and backtracking techniques for finding all root-to-leaf paths with target sum.
- DSA Problems
Lowest Common Ancestor of a Binary Tree
Find the lowest common ancestor of two nodes in a binary tree with an efficient recursive approach.
- DSA Problems
Binary Tree Right Side View Algorithm Solution
Complete Java implementation for binary tree right side view problem with BFS and DFS approaches, including time/space complexity analysis.
- DSA Problems
Diameter of Binary Tree Solution in Java
Complete Java implementation for finding the diameter of a binary tree with optimal time and space complexity analysis.
- DSA Problems
Maximum Depth of Binary Tree Solution
Complete Java implementation for finding maximum depth of binary tree with BFS and DFS approaches, including time/space complexity analysis.
FAANG Data Structures & Algorithms Problems Guide
A curated catalog of concrete data structures and algorithms problems. Use it to plan practice, track coverage, and rehearse solutions with a repeatable approach.