Hash Tables for User Registration and Management

In the context of ride-hailing services like Ola and Uber, hash tables are a crucial data structure for efficient user registration and management. Hash tables allow for quick access, insertion, and deletion of user records, making them ideal for handling large volumes of user data typical in such applications.

Challenges and Benefits

Challenges:

• Ensuring quick access and updates.

Benefits:

• Fast retrieval and management of user data.

Algorithm

Hash tables use a hashing function to store and retrieve user data efficiently.

Code Example

Hashtable

Space and Time Complexity

Space Complexity:

• O(n * m), where n is the number of users and m is the number of fields in each user’s information map.

Time Complexity:

• Average case: O(1) for each operation (addUser, getUser, deleteUser).
• Worst case: O(n) for each operation due to potential hash collisions in the unordered map.