How to create a List of Sets in C# - Step by Step Examples

◀ Previous Next ▶

How to create a List of Sets in C# ?

Answer

In C#, you can create a list of sets using the List class for the outer list and the HashSet class for the inner sets.

✐ Examples

1 Create List of Sets

In this example,

We include the necessary namespace System.Collections.Generic.
We declare two inner sets named set1 and set2 using the HashSet class.
We create an outer list named listOfSets using the List class and initialize it with the inner sets.
Finally, we iterate through the list of sets and print each set to standard output.

C# Program

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> set1 = new HashSet<int> { 1, 2, 3 };
        HashSet<char> set2 = new HashSet<char> { 'a', 'b', 'c' };

        List<HashSet<int>> listOfSets = new List<HashSet<int>> { set1, set2 };

        foreach (var set in listOfSets)
        {
            foreach (var item in set)
            {
                Console.Write(item + " ");
            }
            Console.WriteLine();
        }
    }
}

Output

1 2 3
a b c

2 Create List of Sets with Empty Inner Sets

In this example,

We include the necessary namespace System.Collections.Generic.
We declare two empty inner sets named emptySet1 and emptySet2.
We create an outer list named listOfEmptySets using the List class and initialize it with the empty inner sets.
Finally, we iterate through the list of sets with empty inner sets and print each set to standard output.

C# Program

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> emptySet1 = new HashSet<int>();
        HashSet<char> emptySet2 = new HashSet<char>();

        List<HashSet<int>> listOfEmptySets = new List<HashSet<int>> { emptySet1, emptySet2 };

        foreach (var set in listOfEmptySets)
        {
            foreach (var item in set)
            {
                Console.Write(item + " ");
            }
            Console.WriteLine();
        }
    }
}

Output

Summary

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

◀ Previous Next ▶

C# Tutorials

C# How-Tos

How to create a List of Sets in C# - Step by Step Examples

How to create a List of Sets in C# ?

Answer

✐ Examples

1 Create List of Sets

C# Program

Output

2 Create List of Sets with Empty Inner Sets

C# Program

Output

Summary

More C# Lists Tutorials