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Practice Problem Sheets
DSA Practice Sheets & Interview Guides
Carefully selected coding problems organized by topic to help you practice algorithms and prepare for coding interviews step-by-step.
Featured Problem Sheet
Complete A-to-Z DSA Roadmap
Master Track
ASCI A2Z DSA Master Track
The complete algorithmic roadmap structured into 18 systematic steps, covering language constructs, sorting, arrays, binary search, linked lists, trees, graphs, and dynamic programming.
A2Z TrackComprehensive474 ProblemsVideo Explanations
Practice by Topic
Specialized Practice Sheets
Interview Classic191 Problems
ASCI SDE Core 191 Sheet
Curated collection of 191 problems frequently encountered in technical interviews at Google, Meta, Microsoft, and high-growth unicorns.
Medium to HardExplore
Pattern Synthesis75 Problems
ASCI Algorithmic Patterns (Blind 75)
75 essential problems covering core patterns: Sliding Window, Two Pointers, Fast & Slow Pointers, In-Place Reversal, Monotonic Stack, and Memoization.
Easy to HardExplore
Rapid Revision79 Problems
ASCI 79 High-Yield Interview Sprint
A focused 79-problem syllabus designed for software engineers with upcoming technical screening and on-site loops.
MediumExplore
Systems Track436 Problems
ASCI Core Systems Engineering Track
Deep conceptual and practical preparation for core engineering interviews: OS concurrency, TCP/IP protocols, and DBMS ACID transactions.
Systems EngineeringExplore
Architecture Special122 Problems
ASCI Low-Level System Design & Architecture
Hands-on object-oriented architecture covering SOLID principles, GoF design patterns, concurrency safety, and real-world system modeling.
Mid to Senior SDEExplore