HashMap vs HashSet

Introduction

Before we solve any challenges regarding Hast Tables, it is necessary to look at the definitions of HashMap and HashSet and see how they are different. Both are implemented in Java using the Hash Table class, which is why it is also a common misconception that these two structures are the same, but they are very different from each other.

🔍 HashMap?

HashMap is a collection that contains all the key-value pairs; it maps the values to keys. There is a built-in class available in Java for HashMap, implemented by using Map interface. It provides the basic functionality of hashing along with some helper functions that help in the process of insertion, deletion, and search.

Some of the key features of HashMap are given below:

• A HashMap stores key-value pairs (examples

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