Interview Prep: DSA and System Design
Prepare for coding interviews: data structures and algorithms with interview-style problems you solve in Python or JavaScript, and system design with lessons, build-it problems and case studies.
$39.99/year or $99.99 lifetime. Some lessons and problems are free to read.
- Data Structures & Algorithms14 sections, each with a plain-language lesson and interview-style problems, easy to hard. 210 problems in all.
- System Design12 lessons with quizzes, 22 build-it problems and 19 guided case studies, from a URL shortener up.
Solve problems in the browser
Write and run your solution in Python or JavaScript, check it against the examples, then submit it against hidden tests. A free account opens the free problems.