Applications Development Programmer Analyst Interview Questions and Answers for Freshers

Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.

• Hashmap is implemented using an array of linked lists, where each element in the array is a bucket that can store multiple key-value pairs.

• To store a key-value pair in a hashmap, the key is hashed to determine the index in the array where the pair will be stored.

• Hash collisions can occur when multiple keys hash to the same index, and in such cases, the hashmap uses a ...read more