- DSA Patterns
Combination Sum Algorithm Solutions and Implementation Guide
Comprehensive Java solutions for combination sum problems including backtracking and dynamic programming approaches with time complexity analysis.
- DSA Problems
Max Area of Island Java Solution
Complete Java implementation for finding maximum area of island in 2D grid using DFS and BFS approaches with time and space complexity analysis.
- DSA Problems
Rotting Oranges Java Solution with BFS
Complete Java implementation of the rotting oranges problem using breadth-first search to find minimum time for all oranges to rot.
- DSA Problems
Pacific Atlantic Water Flow Problem Solution
Complete Java implementation for finding cells where water can flow to both Pacific and Atlantic oceans in a grid.
- DSA Patterns
Search in Rotated Sorted Array Java Solution
Complete Java implementation of rotated sorted array search with binary search optimization and edge case handling for FAANG interviews.
- Backend LLD
Rule Evaluation Engine Design and Implementation
Comprehensive low-level design for a scalable rule evaluation engine supporting complex business logic with performance optimization and extensibility.
- DSA Problems
Number of Islands Problem Solution
Complete Java implementation for counting connected land cells in a 2D grid using DFS and BFS approaches.
- DSA Patterns
Binary Search Algorithm Implementation and Applications
Complete Java solution for binary search with multiple use cases, time complexity analysis, and practical implementation patterns for FAANG interviews.
- DSA Patterns
Counting Sort, Bucket Sort, and Radix Sort Use Cases and Implementation
Comprehensive guide to when and how to apply counting sort, bucket sort, and radix sort algorithms with practical Java implementations.
- DSA Problems
Word Search II Java Solution with Trie and DFS
Complete Java implementation for Word Search II problem using Trie data structure and depth-first search with backtracking.
- DSA Patterns
Sorting and Merging Intervals in Java
Complete Java solution for interval sorting problems including merge intervals, interval scheduling, and overlap detection with optimal time complexity.
- DSA Problems
Implement Trie (Prefix Tree) Data Structure in Java
Complete Java solution for implementing a Trie (Prefix Tree) data structure with insert, search, and startsWith operations optimized for string prefix matching.
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