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How do hash tables handle collisions?

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Question: How do hash tables handle collisions?

Options:

  1. By using a linked list for each bucket
  2. By resizing the table
  3. By ignoring the new entry
  4. By using a binary search tree

Correct Answer: By using a linked list for each bucket

Solution: 

One common method for handling collisions in hash tables is to use separate chaining, where each bucket contains a linked list of entries.

How do hash tables handle collisions?

Practice Questions

Q1
How do hash tables handle collisions?
  1. By using a linked list for each bucket
  2. By resizing the table
  3. By ignoring the new entry
  4. By using a binary search tree

Questions & Step-by-Step Solutions

How do hash tables handle collisions?
  • Step 1: Understand that a hash table stores data in 'buckets' based on a unique key.
  • Step 2: Know that a collision happens when two different keys hash to the same bucket.
  • Step 3: Learn about separate chaining, which is a method to handle collisions.
  • Step 4: In separate chaining, each bucket can hold multiple entries using a linked list.
  • Step 5: When a collision occurs, the new entry is added to the linked list in the same bucket.
  • Hash Tables – Data structures that map keys to values using a hash function.
  • Collisions – Occurs when two keys hash to the same index in a hash table.
  • Separate Chaining – A collision resolution technique where each bucket contains a linked list of entries.
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