What is the primary purpose of a hash table?

Practice Questions

Q1
What is the primary purpose of a hash table?
  1. Sorting data
  2. Storing data in a sorted manner
  3. Fast data retrieval
  4. Data compression

Questions & Step-by-Step Solutions

What is the primary purpose of 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 makes it easy to find later.
  • Step 2: Learn about the hash function. A hash function is a special formula that takes an input (like a name or a number) and turns it into a unique code (called a hash).
  • Step 3: See how data is stored. When you add data to a hash table, the hash function creates a code for that data, and the data is stored in a specific location based on that code.
  • Step 4: Understand data retrieval. When you want to find the data later, you use the same hash function on the input to get the code, and then you can quickly find the data in the hash table using that code.
  • Step 5: Recognize the benefit. The main benefit of a hash table is that it allows you to find data very quickly, much faster than searching through a list.
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