Return the word empty rather than reading a missing element.
Acceptance criteria
- 1.#out should show empty.
Handle an empty input — practice exercise
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Output ready when you are
Press Run to render your code, or Submit to validate your solution.
DSA Tutorial · Interview Patterns
Practice: How to Answer in an Interview
These 10 tasks go with the How to Answer in an Interview chapter. 5 of them ask you to build something small from scratch; 5 give you code that is already broken and ask you to work out why. Set aside about 90 minutes for the whole set, though you can do them in any order.
Nothing here is marked by a person. When you press Submit, the editor checks your code against the points listed under each task and tells you straight away what passed and what didn't (you need a free account to submit). If you get stuck, there are hints, and a worked solution once you've had a go. The first 2 tasks are free; the rest are part of the practice plan.
If it's been a while since you read the chapter, here is how it starts: “You are not being marked on whether you produce the optimal solution. You are being marked on whether working with you would be pleasant and productive. Those are different tests, and the second one is easier to pass.” .