C# | Check if two HashSet<T> objects are equal

Equals(Object) Method which is inherited from the Object class is used to check if a specified HashSet<T> object is equal to another HashSet<T> object or not.

Syntax:

public virtual bool Equals (object obj);

Here, obj is the object which is to be compared with the current object.



Return Value: This method return true if the specified object is equal to the current object otherwise it returns false.

Below programs illustrate the use of above-discussed method:

Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// C# program to if a HashSet object
// is equal to another HashSet object
using System;
using System.Collections.Generic;
  
class Geeks {
  
    // Main Method
    public static void Main(String[] args)
    {
  
        // Creating a HashSet of strings
        HashSet<string> mySet = new HashSet<string>();
  
        // Inserting elements in HashSet
        mySet.Add("DS");
        mySet.Add("C++");
        mySet.Add("Java");
        mySet.Add("JavaScript");
  
        // Checking whether mySet is
        // equal to itself or not
        Console.WriteLine(mySet.Equals(mySet));
    }
}

chevron_right


Output:

True

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// C# program to if a HashSet object
// is equal to another HashSet object
using System;
using System.Collections.Generic;
  
class Geeks {
  
    // Main Method
    public static void Main(String[] args)
    {
  
        // Creating a HashSet of strings
        HashSet<string> mySet1 = new HashSet<string>();
  
        // Inserting elements in HashSet
        mySet1.Add("HTML");
        mySet1.Add("CSS");
        mySet1.Add("PHP");
        mySet1.Add("DBMS");
  
        // Creating a HashSet of integers
        HashSet<int> mySet2 = new HashSet<int>();
  
        // Inserting elements in HashSet
        for (int i = 0; i < 5; i++) {
            mySet2.Add(i * 2);
        }
  
        // Checking whether mySet1 is
        // equal to mySet2 or not
        Console.WriteLine(mySet1.Equals(mySet2));
  
        // Creating a HashSet of integers
        HashSet<int> mySet3 = new HashSet<int>();
  
        // Assigning mySet2 to mySet3
        mySet3 = mySet2;
  
        // Checking whether mySet3 is
        // equal to mySet2 or not
        Console.WriteLine(mySet3.Equals(mySet2));
    }
}

chevron_right


Output:

False
True


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.