How to create a Set of integers in C# - Step by Step Examples

How to create a Set of integers in C# ?

Answer

To create a Set of integers in C#, you can use the HashSet class.


✐ Examples

1 Create Set of Integers

In this example,

  1. We import the System.Collections.Generic namespace to use the HashSet class.
  2. We initialize a HashSet named numberSet to store integers.
  3. We add integers to the set using the Add method of HashSet.
  4. The resulting set contains unique integers without duplicates.

C# Program

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> numberSet = new HashSet<int>();

        // Adding integers to the set
        numberSet.Add(1);
        numberSet.Add(2);
        numberSet.Add(3);
        numberSet.Add(4);
        numberSet.Add(5);

        // Printing the set
        foreach (var num in numberSet)
        {
            Console.WriteLine(num);
        }
    }
}

Output

1
2
3
4
5

2 Create Set of Integers using Collection Initializer

In this example,

  1. We import the System.Collections.Generic namespace to use the HashSet class.
  2. We initialize a HashSet named numberSet using a collection initializer to add integers directly.
  3. The collection initializer syntax allows us to add integers in a compact form.
  4. The resulting set contains unique integers without duplicates.

C# Program

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> numberSet = new HashSet<int>
        {
            1, 2, 3, 4, 5
        };

        // Printing the set
        foreach (var num in numberSet)
        {
            Console.WriteLine(num);
        }
    }
}

Output

1
2
3
4
5

Summary

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


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  2. How to Initialize a Set in C# ?
  3. How to Get Length of a Set in C# ?
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  5. How to create a Set of Numbers from 1 to N in C# ?
  6. How to create a Set of integers in C# ?
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  15. How to check if a Set contains all the items of Another Set in C# ?
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  17. How to Copy a Set in C# ?
  18. How to add an Item to a Set in C# ?
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  21. How to check if Two Sets are Equal in C# ?
  22. How to Convert a Set of Integers to a Set of Strings in C# ?
  23. How to Convert a Set of Strings to a Set of Integers in C# ?
  24. How to Convert a Set of Floats to a Set of Strings in C# ?
  25. How to Convert a Set of Strings to a Set of Floats in C# ?
  26. How to Filter Items of a Set based on a Condition in C# ?
  27. How to Remove Specific Item from a Set in C# ?
  28. How to Remove Items from Set based on a Condition in C# ?
  29. How to create a Set of Sets in C# ?