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Java: Which statement about Dynamic Arrays and Resizing is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Dynamic Arrays and Resizing is the strongest interview answer?

  1. Dynamic Arrays and Resizing is mostly a naming style choice and has little effect on runtime or design.
  2. Dynamic Arrays and Resizing exists mainly to reduce the number of Java files in a project.
  3. A dynamic array keeps a resizable backing array and grows by allocating a larger array and copying existing elements.
  4. Dynamic Arrays and Resizing matters only for frontend frameworks, not for core Java applications.

Hint

Start with the core rule behind Dynamic Arrays and Resizing.

Answer and rationale

Correct answer: C. A dynamic array keeps a resizable backing array and grows by allocating a larger array and copying existing elements.

A dynamic array keeps a resizable backing array and grows by allocating a larger array and copying existing elements. This is the base concept interviewers commonly test first.

Track: Java