Basic syntax

A HashSet variable declaration needs to meet the following requirements:

• The HashSet keyword, its element type between left and right arrow characters, and a unique name
• The new keyword to initialize the HashSet in memory, followed by the HashSet keyword and element type between arrow characters.
• A pair of parentheses capped off by a semicolon.

In blueprint form, it looks as follows:

HashSet<elementType> name = new HashSet<elementType>();

Unlike stacks and queues, you can initialize a HashSet with default values when declaring the variable:

HashSet<string> people = new HashSet<string>();

// OR

HashSet<string> people = new HashSet<string>() { "Joe", "Joan", "Hank"};

To add elements, use the Add method and specify the new element:

people.Add("Walter");
people.Add("Evelyn");

To remove an element, call Remove and specify the element you want to delete from the...