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What is the main disadvantage of using open addressing for collision resolution?

Practice Questions

Q1
What is the main disadvantage of using open addressing for collision resolution?
  1. It requires more memory
  2. It can lead to clustering
  3. It is slower than chaining
  4. It cannot handle deletions

Questions & Step-by-Step Solutions

What is the main disadvantage of using open addressing for collision resolution?
  • Step 1: Understand what open addressing is. It is a method used in hash tables to resolve collisions when two keys hash to the same index.
  • Step 2: Know that when a collision occurs, open addressing finds the next available slot in the array to store the new key.
  • Step 3: Realize that if many keys collide, they will fill up consecutive slots in the array.
  • Step 4: This filling of consecutive slots is called clustering.
  • Step 5: Understand that clustering can make it harder to find empty slots for new keys and can slow down searches for existing keys.
  • Step 6: Conclude that the main disadvantage of open addressing is that clustering can degrade performance during searches and insertions.
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