CS3401 · 4 credits · Semester 6 · 2024–2025

Database Management Systems

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CS3401 · Core Concepts

Question 3 of 10

Topic: Problem solvingDifficulty: HardBloom: Understand

Summary

Question

Compare Edge cases with an alternative approach and discuss trade-offs.

Result

Knowledge

24%

Delivery

91%

Technical relevancy

20%

Technical term match

23%

Your recording

Your transcript

So, edge cases is basically when you... uh... use it for solving problems. I think the main idea is that it works by, like, breaking things down. For example, if you had a list, you'd just iterate and apply the logic.

Better answer

Edge cases is best understood as a technique that trades memory for time. Start by stating the definition, then give a 2-line example, then mention complexity (typically O(n log n) for the common case), and close with one trade-off such as space overhead or sensitivity to input order.

Coverage

Hit 1 of 4

Key point 1 about Edge cases
Key point 2 about Edge cases
Key point 3 about Edge cases
Key point 4 about Edge cases

Gaps

Missed: key point 2 about edge cases

Misconceptions

Misstated the relationship between Edge cases and complexity