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What is a potential drawback of using hash tables?

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Question: What is a potential drawback of using hash tables?

Options:

  1. They require more memory than arrays
  2. They are slower than linked lists
  3. They cannot handle collisions
  4. They are not suitable for large datasets

Correct Answer: They require more memory than arrays

Solution: 

Hash tables can require more memory due to the need for additional space to handle collisions and maintain performance.

What is a potential drawback of using hash tables?

Practice Questions

Q1
What is a potential drawback of using hash tables?
  1. They require more memory than arrays
  2. They are slower than linked lists
  3. They cannot handle collisions
  4. They are not suitable for large datasets

Questions & Step-by-Step Solutions

What is a potential drawback of using hash tables?
  • Step 1: Understand what a hash table is. A hash table is a data structure that stores data in a way that allows for fast access using a key.
  • Step 2: Learn about collisions. A collision happens when two different keys hash to the same index in the table.
  • Step 3: Know that to handle collisions, hash tables often need extra space. This can be done using methods like chaining or open addressing.
  • Step 4: Realize that this extra space can lead to higher memory usage compared to other data structures.
  • Step 5: Conclude that while hash tables are fast, they can require more memory, which is a potential drawback.
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