Practice: DSA Mock Coding Round
75 min · Advanced
This mock round puts the whole module together: three timed problems (one easy, two medium), each solved with the full routine of clarify, brute force, optimize, code, dry run and complexity, spoken aloud. Then you score yourself with a rubric and try the follow-up variants interviewers usually add.
Topics in this lesson
- How to run this mock round
- The model transcript: clarify, brute force, optimize, code, dry run, complexity
- Self-score rubric for communication and correctness
- Follow-up variants interviewers add
Interview questions this lesson answers
- Rotate Array: what do you clarify first?
- Rotate Array: what is the brute force, and how do you improve it?
- Why does the three-reversal trick work for rotating right?
- What happens if you forget k %= n?
- Product of Array Except Self: what is the key idea?
- Why is the prefix-suffix solution O(1) extra space?
- How do zeros affect Product of Array Except Self?
- What about overflow in the product problem?
- Merge Intervals: why sort first?
- Merge Intervals: what do you clarify?
Sign in free to continue this lesson
Create a free account to read every lesson, practise with the exercises and keep track of your progress.