Here I am writing a way to implement Hashset. HashSet creates hashtable to store the data. As it implements Set interface so it doesnt contains duplicate elements. It also extends AbstractSet class.

A HashSet is a collection class in Java that implements the Set interface. It stores unique elements and does not allow duplicates. Internally, it uses a hash table to store the elements, which ...

Use a HashSet to automatically dedupe the List. Write your own Java algorithm to remove duplicates from a List. Optimize your own algorithms with standard Java classes. Remove duplicates with Java’s ...