To remove all items from a HashSet you can use the Clear method. Use HashSet set operations methods in C#. HashSet has a number of important methods for set operations such as IntersectWith ...

import java.util.HashSet; ... Using composition for this scenario allows the CharacterCompositionExample class to use just two of HashSet‘s methods, without inheriting all of them.

The most common approaches to removing duplicates from a List in Java include the following: A brute force comparison using nested loops. The use of a HashSet to find the unique duplicates. A combined ...