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Python: In Python, which comparison about Graphs and Adjacency Lists is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Python, which comparison about Graphs and Adjacency Lists is accurate?

  1. There is no practical difference in behavior, performance, or maintainability when Graphs and Adjacency Lists is involved.
  2. The oldest option related to Graphs and Adjacency Lists is always the right production choice regardless of workload or context.
  3. Differences around Graphs and Adjacency Lists are mostly cosmetic, so correctness and debugging quality do not really change.
  4. Adjacency lists are space-efficient for sparse graphs, while adjacency matrices trade more memory for constant-time edge existence checks.

Hint

Focus on the behavior or tradeoff, not just the keyword.

Answer and rationale

Correct answer: D. Adjacency lists are space-efficient for sparse graphs, while adjacency matrices trade more memory for constant-time edge existence checks.

Adjacency lists are space-efficient for sparse graphs, while adjacency matrices trade more memory for constant-time edge existence checks. This is the comparison that usually separates memorization from understanding.

Track: Python