DSA Pattern Wise
A structured pattern-based approach to DSA mastery. Instead of solving random problems, learn to recognise the 56 patterns across 10 categories that cover 95% of coding interview questions.
10
Categories
56+
Patterns
276+
Problems
2026
Updated
What's Inside
Arrays
Two pointers, sliding window, merge intervals, sorting, prefix sums
Strings
Pattern matching, string manipulation, frequency maps, palindromes
Binary Search
Classic, rotated arrays, search in matrix, bounds-based variants
Recursion
Backtracking, divide & conquer, memoised recursion
Linked List
Fast/slow pointer, reversal, merge, cycle detection
Stacks & Queues
Monotonic stack, BFS queue, expression evaluation
Binary Trees & BST
Traversal, LCA, diameter, BST operations
Priority Queues
Heap patterns, top-K problems, stream processing
Dynamic Programming
1D/2D DP, knapsack, LCS, state machine patterns
Graphs
BFS, DFS, topological sort, union-find, shortest path
How to Use This Sheet
Beginner
Start with Arrays, Strings, and Binary Search. Build fundamentals with easy problems before advancing.
Interview Prep
Cover all 10 categories. Aim for 3 to 5 problems per pattern. Time yourself to simulate interview pressure.
Advanced
Focus on Dynamic Programming and Graphs. Practice pattern identification across mixed, unseen problem sets.
Key Features
- 10 interview-critical DSA categories
- 56 recognisable patterns with clues
- 276 curated LeetCode practice problems
- Pattern-first learning: recognise before solving
- Scenario + Recognition Clue for every pattern
- Organised from fundamentals to advanced DP and Graphs
Market Demand - Who's Hiring
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