- Read the problem statement
- Look at any provided unit tests
- Add any unit tests you think might be relevant and not currently covered
- Order the unit tests from easiest to hardest
- Ask questions to confirm your understanding of the problem and verify edge cases
- Think of a possible approach to solve the problem
- Share your approach with the interviewers and get their buy-in
- You may do this by writing pseudo-code as you are explaining your thought process
- Implement your solution
- If you encounter any difficulties, state them and explain what you are thinking
- Make use of preconditions/early exit if possible to handle empty cases
- Run your code frequently, even if it is not fully working
- Discuss any follow-up questions with the interviewers