Learn the fundamental patterns that solve 90% of coding interview problems. Each pattern includes detailed explanations, key insights, and real company problems.
Use two pointers to solve problems efficiently
Maintain a window of elements to find optimal solutions
Detect cycles and find middle elements
Merge overlapping intervals efficiently
Navigate trees using DFS and BFS techniques
Leverage BST properties for efficient solutions
Explore graphs using DFS and BFS
Order elements based on dependencies
Solve problems with linear recurrence relations
Handle 2D grid and matrix problems
Optimize resource allocation problems
Find optimal subsequences and substrings
Efficiently search in sorted arrays
Adapt binary search for complex scenarios
Implement and optimize sorting techniques
Explore all possible solutions systematically
Make locally optimal choices
Solve problems using bitwise operations
Efficiently handle disjoint set operations
Follow our proven approach to pattern mastery
Study the core technique and identify when to apply it. Learn the underlying principles and common variations.
Start with easy problems and gradually increase difficulty. Focus on implementation details and edge cases.
Test your understanding by solving variations and mixed problems. Build pattern recognition skills through repetition.
Start with our curated problem sets and structured learning path