Question

How to remove an element from a set in C#

Answer 1

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        // Create a HashSet
        HashSet<int> numbers = new HashSet<int> { 1, 2, 3, 4, 5, 6 };

        // Remove an element
        bool isRemoved = numbers.Remove(3);

        // Check if removal was successful
        Console.WriteLine(isRemoved ? "Element removed." : "Element not found.");

        // Display the updated HashSet
        foreach (var number in numbers) {
            Console.WriteLine(number);
        }
    }
}




/*
run:

Element removed.
1
2
4
5
6

*/

 

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