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What is a potential drawback of using a hash table?

Practice Questions

Q1
What is a potential drawback of using a hash table?
  1. It requires more memory than arrays
  2. It is slower than binary search trees
  3. It cannot handle dynamic data
  4. It is not suitable for large datasets

Questions & Step-by-Step Solutions

What is a potential drawback of using a hash table?
  • 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 include additional arrays or linked lists.
  • Step 4: Recognize that this extra space can lead to using more memory than simpler data structures like arrays.
  • Step 5: Conclude that while hash tables are fast, they can be less memory efficient due to the need for handling collisions.
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