Ace Java 2025: Rock Your 'Thinking in Java' Challenge!

Question: 1 / 510

What effect does a good hash function have?

It guarantees no collisions

It speeds up data retrieval

A good hash function speeds up data retrieval by ensuring that data items are assigned to unique locations in a hash table, thereby eliminating the need for linear search. Option A is incorrect because even with a good hash function, collisions can still occur. Option C is incorrect because a good hash function does not necessarily decrease memory usage, as the hash table still needs to store the same amount of data. Option D is incorrect because a good hash function does not necessarily simplify the code, as it may still require complex algorithms and logic.

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It decreases memory usage

It simplifies the code

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