- DSA Patterns
Connected Components in Graphs and Grids
Complete guide to finding connected components using Union-Find, DFS, and BFS approaches with Java implementations for FAANG interviews.
- DSA Patterns
Dynamic Connectivity Algorithms and Applications
Comprehensive guide to dynamic connectivity problems including Union-Find, connectivity queries, and network reliability algorithms with Java implementations.
- DSA Patterns
Dijkstra's Algorithm and BFS for Shortest Path Problems
Comprehensive guide to implementing Dijkstra's algorithm and BFS for finding shortest paths in weighted and unweighted graphs, with practical Java solutions and performance considerations.
- DSA Patterns
Cycle Detection in Directed Graphs Using DFS
Complete Java solution for detecting cycles in directed graphs with time complexity analysis and implementation trade-offs.
- DSA Patterns
Topological Sort Algorithm Implementation and Applications
Complete Java solution for topological sorting with DFS and BFS approaches, including cycle detection and practical use cases.
- 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 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 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 Patterns
Breadth-First Search Graph and Grid Traversal Patterns
Comprehensive guide to BFS algorithms for graph traversal, grid exploration, and shortest path problems with Java implementations.
- DSA Patterns
Lowest Common Ancestor in Binary Search Tree
Find the lowest common ancestor of two nodes in a binary search tree with optimal time and space complexity.
- DSA Patterns
Convert Sorted Array to Height-Balanced BST
Learn to convert a sorted array into a height-balanced binary search tree using divide-and-conquer approach with O(n) time and space complexity.
- DSA Patterns
Binary Search Tree Operations: Insert, Delete, and Search Implementation
Complete Java implementation of BST operations with detailed analysis of time complexity, edge cases, and memory considerations for FAANG interviews.
Data Structures & Algorithms Patterns Guide
A curated guide for pattern recognition, core data structures, and implementation speed. Use it to plan practice, track coverage, and rehearse solutions with a repeatable approach.