Hash Search Algorithm

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Questions and Answers

Which operation is used to add an element to a hash table?

Insertion

What is the purpose of the search operation in a hash table?

To look-up values

How does the hash function resolve collisions in a hash table?

By assigning a new index number

What does the delete operation do in a hash table?

Removes a value Signup and view all the answers

In the given Python example, what is the value of the hash key for 3?

3 Signup and view all the answers

What is the purpose of the hash_key function in the Python example?

To calculate the index number Signup and view all the answers

What is the value of the hash key for 9 in the given Python example?

3 Signup and view all the answers

What is the purpose of the m parameter in the hash_key function?

To resolve collisions Signup and view all the answers

Which data structure is commonly used to store and access data easily and efficiently?

Array Signup and view all the answers

What is the time complexity for searching in an Array data structure?

O(log n) Signup and view all the answers

Why was there a need for a new data structure even though Array was already available?

To improve efficiency Signup and view all the answers

What is the purpose of a hash function in hashing?

To determine the index of an element in a hash table Signup and view all the answers

What is a collision in hashing?

When a key maps to an already occupied location Signup and view all the answers

What is one advantage of hashing in data structures?

Fast data retrieval with constant-time complexity Signup and view all the answers

What does a hash table do in hashing?

Maps keys to values using a hash function Signup and view all the answers

What is the time complexity for searching in a hash table?

O(1) Signup and view all the answers

What is one application of hashing?

Secure data storage Signup and view all the answers

Which data structure is an example of a hash table?

Dictionary Signup and view all the answers

What is the time complexity of hash tables in the best-case scenario?

O(1) Signup and view all the answers

What happens when two values generate the same hash key in a hash table?

The values are combined into one location Signup and view all the answers

What is the disadvantage of using hash tables?

Performance decreases with many collisions Signup and view all the answers

What is the process of generating a fixed-size output from an input of variable size using mathematical formulas called?

Hashing Signup and view all the answers

What is the average time complexity of hash tables?

O(1) Signup and view all the answers

What is the purpose of chaining in hash tables?

To combine values that generate the same hash key Signup and view all the answers

What is the advantage of using hash tables?

High performance for data lookup, insertion, and deletion Signup and view all the answers

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Hash Search Algorithm

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Questions and Answers

Which operation is used to add an element to a hash table?

What is the purpose of the search operation in a hash table?

How does the hash function resolve collisions in a hash table?

What does the delete operation do in a hash table?

In the given Python example, what is the value of the hash key for 3?

What is the purpose of the hash_key function in the Python example?

What is the value of the hash key for 9 in the given Python example?

What is the purpose of the m parameter in the hash_key function?

Which data structure is commonly used to store and access data easily and efficiently?

What is the time complexity for searching in an Array data structure?

Why was there a need for a new data structure even though Array was already available?

What is the purpose of a hash function in hashing?

What is a collision in hashing?

What is one advantage of hashing in data structures?

What does a hash table do in hashing?

What is the time complexity for searching in a hash table?

What is one application of hashing?

Which data structure is an example of a hash table?

What is the time complexity of hash tables in the best-case scenario?

What happens when two values generate the same hash key in a hash table?

What is the disadvantage of using hash tables?

What is the process of generating a fixed-size output from an input of variable size using mathematical formulas called?

What is the average time complexity of hash tables?

What is the purpose of chaining in hash tables?

What is the advantage of using hash tables?

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