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Java: Which practice avoids a common mistake with Doubly Linked Lists?

Difficulty:

Medium

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which practice avoids a common mistake with Doubly Linked Lists?

  1. Ignore the Doubly Linked Lists issue and rely on team discipline instead of APIs or contracts.
  2. Silence the Doubly Linked Lists problem by using raw types, broad catches, or shared mutable state.
  3. Do not update only one side of the links during insert or delete operations, because partial rewiring corrupts the structure.
  4. Prefer the version of Doubly Linked Lists that makes behavior less predictable as long as the code compiles.

Hint

Look for the option that protects correctness instead of hiding the problem.

Answer and rationale

Correct answer: C. Do not update only one side of the links during insert or delete operations, because partial rewiring corrupts the structure.

Do not update only one side of the links during insert or delete operations, because partial rewiring corrupts the structure. This is a common failure mode in real Java code and a frequent interview follow-up.

Track: Java