Arrays
A structured collection of essential array problems covering fundamentals, core patterns, optimization techniques, and interview-ready approaches.
Topic-wise Data Structures and Algorithms sheets with difficulty-based problems, reusable patterns and multiple approaches — built for learning, practice and interview revision.
Topic-wise DSA sheets designed around patterns, multiple approaches, clear notes and interview-focused practice.

Patterns, approaches & focused interview practice
A structured collection of essential array problems covering fundamentals, core patterns, optimization techniques, and interview-ready approaches.
A structured collection of essential string problems covering fundamentals, pattern matching, hashing, two pointers, sliding window, and interview-ready techniques.
The DSA library is growing with more topic-wise sheets, patterns and practice.
Well-structured sheets from educators and the developer community.
A comprehensive DSA sheet covering important topics from fundamentals to advanced concepts.
A topic-wise problem sheet with a broad set of interview-oriented questions.
A curated collection of problems focused on technical interview preparation.
A practical DSA collection designed around problem solving, patterns and interview preparation.
A structured DSA resource covering core concepts, patterns and interview-focused problems.
A focused DSA resource with practical problems and concepts useful for interview preparation.
A structured collection of DSA problems with a strong interview and company-oriented focus.