How to Get Length of a Set in C# - Step by Step Examples

How to Get Length of a Set in C# ?

Answer

To get the length of a set in C#, you can use the Count property of the HashSet<T> class.


✐ Examples

1 Get Length of a Set with Elements

In this example,

  1. We include the necessary namespace by using using System.Collections.Generic to access the HashSet<T> class.
  2. We declare a HashSet<string> variable named mySet and initialize it with some string elements.
  3. We use the Count property of mySet to get the number of elements in the set.
  4. Finally, we print the length of the set to the console using Console.WriteLine.

C# Program

using System;
using System.Collections.Generic;

class Program {
    static void Main() {
        // Declare and initialize a set
        HashSet<string> mySet = new HashSet<string> { "apple", "banana", "orange" };

        // Get the length of the set
        int length = mySet.Count;

        // Print the length of the set
        Console.WriteLine("Length of the set: " + length);
    }
}

Output

Length of the set: 3

2 Get Length of an Empty Set

In this example,

  1. We include the necessary namespace by using using System.Collections.Generic to access the HashSet<T> class.
  2. We declare an empty HashSet<string> variable named emptySet and initialize it using the default constructor.
  3. We use the Count property of emptySet to get the number of elements in the set.
  4. Finally, we print the length of the set to the console using Console.WriteLine.

C# Program

using System;
using System.Collections.Generic;

class Program {
    static void Main() {
        // Declare and initialize an empty set
        HashSet<string> emptySet = new HashSet<string>();

        // Get the length of the empty set
        int length = emptySet.Count;

        // Print the length of the empty set
        Console.WriteLine("Length of the empty set: " + length);
    }
}

Output

Length of the empty set: 0

Summary

In this tutorial, we learned How to Get Length of a Set in C# language with well detailed examples.


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