About Algorithm Notes

Algorithm Notes is an independent educational reference combining recovered algorithm-interview topics with original guides about reusable problem-solving patterns.

AlgoDrills is actively maintained. View the project on GitHub.

Editorial approach

Recovered articles identify their evidence tier, historical source path, and Wayback snapshot. The archive proves that a topic existed; the published explanation, examples, and structure are independently rewritten and manually reviewed.

Original guides are labeled separately, connect related problems, and do not claim a historical source.

Independent status

This site does not claim ownership of the historical domain or affiliation with the companies, interview platforms, or archives mentioned in source notes.