Master algorithms and data structures through hands-on coding practice.BigO Algorithms is a native iOS app built for software engineers and computer science students preparing for technical interviews. Write real code, run it against test cases, and build the problem-solving instincts that interviewers look for.
Master algorithms and data structures through hands-on coding practice.
BigO Algorithms is a native iOS app built for software engineers and computer science students preparing for technical interviews. Write real code, run it against test cases, and build the problem-solving instincts that interviewers look for.
Structured levels Work through curated algorithm challenges organized by difficulty. Start with fundamentals and progress to advanced problems covering arrays, trees, graphs, sorting, dynamic programming, and more.
Built-in code editor and compiler Write and execute code directly in the app. No need to switch between tools. Supports multiple programming languages with syntax highlighting and instant feedback.
AI-powered hints Stuck on a problem? Request a targeted hint that nudges you toward the solution without giving it away. Hints focus on the underlying algorithmic concept, not just syntax fixes.
Personal notes Every AI hint automatically saves to your notes, organized by level and challenge. Add your own annotations to build a personal reference guide of patterns and mistakes.
Complexity awareness Every challenge is tagged with its expected time and space complexity. Learn to recognize the difference between O(n) and O(n^2) solutions in practice, not just theory.
BigO Algorithms includes free access to introductory challenges, compiler runs, and AI hints. A subscription unlocks the full problem set and unlimited usage.