- https://www.udemy.com/course/master-the-coding-interview-big-tech-faang-interviews/
- https://codeforces.com/
- https://www.interviewcake.com/
- https://interviewing.io/
- https://leetcode.com/
- https://www.youtube.com/channel/UCcH4Ga14Y4ELFKrEYM1vXCg/playlists
- Verify constraints
- Write out some test cases
- Figure out a solution without code
- Write out our solution in code
- Double check for errors
- Test our code with our test cases
- Analyze space & time complexity
- Can we do better?