Cheat sheet · Foundations
DSA and problem solving cheat sheet
Data structures and patterns.
Chapters
- 1Complexity and Big-O
- 2Arrays, strings and hashing
- Linked lists, stacks and queues
+ 6 more
- 9 chapters
- 76 concepts
Opens with credits
DSA cheat sheets
DSA cheat sheets on Sefism, written by Tauseef Fayyaz: every concept in plain words, why it is used and the pitfall that catches people out.
- 76 sheets
- 5120 concepts
Free to learn. Credits keep it fair.
Reading is free. Adding a roadmap, keeping a cheat sheet or asking Tauseef a question uses credits, which only make sure the platform goes to people who are actually learning.
- 15creditswhen you join
- 1stroadmapfree to add
- Morecreditson request, as you learn
Foundations
3Start here if you are new or your basics are patchy.
Cheat sheet · Foundations
University to job-ready cheat sheet
Semester by semester plan for CS students.
Chapters
- 1Programming and object-oriented design
- 2Software engineering practice and Git
- Data structures and algorithms
+ 6 more
- 10 chapters
- 70 concepts
Opens with creditsCheat sheet · Foundations
Competitive programming cheat sheet
Codeforces, AtCoder, ICPC.
Chapters
- 1C++ for contests
- 2Maths basics
- Greedy and sorting
+ 7 more
- 10 chapters
- 64 concepts
Opens with credits
Browse the cheat sheets by topic
Each of these is its own page: the foundations shelf, the career shelf, the sheets that are open end to end. The filters above do the same thing without a page load.
Work with me
Stuck on something specific?
Writing only gets you so far. If you want an answer to your situation rather than the general case, book a session and we will work through it together. Sessions are free for approved Sefism members, and a few slots open each week.
- 1:1 Mentorship
- Fresh Graduate Mentorship
- Career Guidance
Brand deals, promos and partnerships: tauseeffayyaz@gmail.com
Follow along
New writing, resources and project ideas land here first.