How to Explain a LeetCode Solution in English (Interview Script)
Explain a LeetCode solution in English with a fixed script: restate, approach, walk through an example, state time and space complexity, then name edge cases. Practise the spoken order so complexity talk does not freeze under pressure.
You have been asked in a technical interview: "How would you detect duplicate records in a customer database?" Talk through your thought process using the structure below. Write in bullet points — not full sentences.
- Initial idea — First solution that comes to mind
- Trade-offs — Other approaches, pros and cons
- Justify — Why you chose this approach
- Next steps — What you will do first
You have been asked in a technical interview: "How would you detect duplicate records in a customer database?" Talk through your thought process using the structure below. Write in bullet points — not full sentences.
- Initial idea — First solution that comes to mind
- Trade-offs — Other approaches, pros and cons
- Justify — Why you chose this approach
- Next steps — What you will do first
How would you detect duplicate records in a customer database?
What is the first solution that comes to mind?
What other approaches could you use? What are the advantages and disadvantages of each?
Why are you choosing this approach?
What will you do first? Step by step.
e.g. Check for duplicate email addresses / group by email and count rows where count is greater than 1 e.g. Could also check phone number and name combinations / SQL is faster for large datasets / Python gives more flexibility for fuzzy matching e.g. Since speed is important and data is in a relational database, SQL GROUP BY is the most efficient starting point e.g. Query for duplicate emails / check if duplicates are true duplicates or data entry errors / propose a deduplication strategy
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Explain a LeetCode solution out loud