- DSA Patterns
Clone Graph - Deep Copy of Connected Undirected Graph
Comprehensive Java solution for cloning connected undirected graphs with DFS and BFS approaches, including time/space complexity analysis and implementation trade-offs.
- 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 Patterns
Number of Islands Problem Solution in Java
Complete Java implementation for counting islands in a 2D grid using DFS and BFS 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 Patterns
Depth-First Search and Connected Components in Graph Algorithms
Comprehensive guide to DFS traversal and connected components detection in undirected graphs with Java implementations.
- DSA Problems
Invert Binary Tree Algorithm Solution
Complete Java implementation for inverting a binary tree with recursive and iterative approaches, including time complexity analysis and edge case handling.
- DSA Patterns
Word Search and Dictionary Matching Algorithms
Comprehensive guide to implementing word search and dictionary matching algorithms using tries, backtracking, and optimized search techniques for FAANG coding interviews.
- DSA Patterns
Subtree of Another Tree Algorithm Solution
Complete Java implementation for checking if one binary tree is a subtree of another, including multiple approaches and time complexity analysis.
- DSA Patterns
Invert Binary Tree Algorithm Solution
Complete Java implementation of binary tree inversion with recursive and iterative approaches, including time complexity analysis and practical considerations for FAANG interviews.
- DSA Patterns
Tree Path Sum Problems in Java: DFS and BFS Solutions
Comprehensive guide to solving tree path sum problems using DFS and BFS traversal techniques with optimal time and space complexity analysis.
- DSA Patterns
Lowest Common Ancestor in Binary Trees and Graphs
Comprehensive Java solution for finding the lowest common ancestor in binary trees, including iterative and recursive approaches with time complexity analysis.
- DSA Patterns
Tree Traversals: Preorder, Inorder, and Postorder Depth-First Search
Complete Java implementation of tree traversal algorithms with iterative and recursive approaches, including time/space complexity analysis and practical use cases.
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