Implement tail for a Very Large File

Problem Overview

You have a very large file and want a program like the Unix tail that prints its last n lines. How would you do it, and what can be optimised? That is the question as reported, asked in words rather than coded. What the one report adds: - It came…

• 1 candidate-reported follow-up — the exact probes interviewers asked, with the trigger for each
• The rest of the problem statement — full requirements, constraints, and edge cases
• Approach and trade-offs — what passing candidates did, and the mistakes that sink people