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Java: What deeper point about Adjacency List vs Adjacency Matrix should a senior Java developer mention?

Difficulty:

Hard

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

What deeper point about Adjacency List vs Adjacency Matrix should a senior Java developer mention?

  1. At senior level, the right answer is that Adjacency List vs Adjacency Matrix exists mostly for historical syntax reasons.
  2. At senior level, the JVM removes the tradeoffs around Adjacency List vs Adjacency Matrix, so design choices barely matter.
  3. At senior level, any approach to Adjacency List vs Adjacency Matrix is equally correct if it compiles and passes a small test.
  4. Strong candidates relate representation choice to algorithm behavior because BFS, DFS, and neighbor iteration depend on it directly.

Hint

Look beyond syntax and explain the runtime, API, or design consequence.

Answer and rationale

Correct answer: D. Strong candidates relate representation choice to algorithm behavior because BFS, DFS, and neighbor iteration depend on it directly.

Strong candidates relate representation choice to algorithm behavior because BFS, DFS, and neighbor iteration depend on it directly. This is the kind of tradeoff-aware answer senior interviews usually expect.

Track: Java