HashSet | C# Online Compiler

HashSet by RajeevServer

using System;
using System.Collections.Generic;
 namespace HashSetDemo
{
public class Program
{
	public static void Main()
	{
		HashSet<string> names=new HashSet<string>{"Rajeev", "Akash", "Amit"};
		foreach(var country in names)
		{
		Console.WriteLine(country);
		}
		names.Add("Rajeev");
		Console.WriteLine("---------");
		//duplicates are not added into collection.
		foreach(var name in names)
		{
		Console.WriteLine(name);
		}
		
		//ExceptWith 
		
		HashSet<string> names1=new HashSet<string>{"Rajeev", "Akash", "Amit","Deepak","Mohit"};
		
		names1.ExceptWith(names);
		Console.WriteLine("-----ExceptWith(elements not present in second(names)----");
		foreach(var name in names1)
		{
		Console.WriteLine(name);
		}
		
		//IntersectWith 
		
		names.IntersectWith(names1);
		Console.WriteLine("-----IntersectWith(elements common----");
		foreach(var name in names)
		{
		Console.WriteLine(name);
		}
		
		
		
		//UnionWith
		
				
		names.UnionWith(names1);
		Console.WriteLine("-----UnionWith----");
		foreach(var name in names)
		{
		Console.WriteLine(name);
		}
		
		Console.WriteLine("-----Custom HashSet With Duplicates----");
		HashSet<Employee> employees=new HashSet<Employee>
		{
			{new Employee{Emp_Id=1,Emp_name="Rajeev",Dept_name="IT"}},
			{new Employee{Emp_Id=1,Emp_name="Rajeev",Dept_name="IT"}},
			{new Employee{Emp_Id=3,Emp_name="Akash",Dept_name="IT"}},
			{new Employee{Emp_Id=4,Emp_name="Amit",Dept_name="IT"}}
		};
		Console.WriteLine("{0,-6}{1,10}{2,-8}","Emp_Id","Emp_name","Dept_name");
		Console.WriteLine("==============================");
		foreach(var employee in employees)
		{
			Console.WriteLine("{0,-8}{1,-10}{2,5}",employee.Emp_Id,employee.Emp_name,employee.Dept_name);
		}
		Console.WriteLine("==============================");
	}
}
	 //Implement IEquatable Interface methods Equals and GetHashCode
	 public class Employee:IEquatable<Employee>
	{
		 public int Emp_Id{get;set;}
		 public string Emp_name{get;set;}
		 public string Dept_name{get;set;}
		 public bool Equals(Employee other)
        {
			
                return this.Emp_Id.Equals(other.Emp_Id);
			
        }

        public override int GetHashCode()
        {
                return this.Emp_Id.GetHashCode();
        }
	 }
}

​x
 
using System;
using System.Collections.Generic;
 namespace HashSetDemo
{
public class Program
{
    public static void Main()
    {
        HashSet<string> names=new HashSet<string>{"Rajeev", "Akash", "Amit"};
        foreach(var country in names)
        {
        Console.WriteLine(country);
        }
        names.Add("Rajeev");
        Console.WriteLine("---------");
        //duplicates are not added into collection.
        foreach(var name in names)
        {
        Console.WriteLine(name);
        }
        
        //ExceptWith 
        
        HashSet<string> names1=new HashSet<string>{"Rajeev", "Akash", "Amit","Deepak","Mohit"};
        
        names1.ExceptWith(names);
        Console.WriteLine("-----ExceptWith(elements not present in second(names)----");
        foreach(var name in names1)
        {
        Console.WriteLine(name);
        }
        
        //IntersectWith 
        
        names.IntersectWith(names1);
        Console.WriteLine("-----IntersectWith(elements common----");
        foreach(var name in names)
        {
        Console.WriteLine(name);
        }
        
        
        
        //UnionWith
        
                
        names.UnionWith(names1);
        Console.WriteLine("-----UnionWith----");
        foreach(var name in names)
        {
        Console.WriteLine(name);
        }
        
        Console.WriteLine("-----Custom HashSet With Duplicates----");
        HashSet<Employee> employees=new HashSet<Employee>
        {
            {new Employee{Emp_Id=1,Emp_name="Rajeev",Dept_name="IT"}},
            {new Employee{Emp_Id=1,Emp_name="Rajeev",Dept_name="IT"}},
            {new Employee{Emp_Id=3,Emp_name="Akash",Dept_name="IT"}},
            {new Employee{Emp_Id=4,Emp_name="Amit",Dept_name="IT"}}
        };
        Console.WriteLine("{0,-6}{1,10}{2,-8}","Emp_Id","Emp_name","Dept_name");
        Console.WriteLine("==============================");
        foreach(var employee in employees)
        {
            Console.WriteLine("{0,-8}{1,-10}{2,5}",employee.Emp_Id,employee.Emp_name,employee.Dept_name);
        }
        Console.WriteLine("==============================");
    }
}
     //Implement IEquatable Interface methods Equals and GetHashCode
     public class Employee:IEquatable<Employee>
    {
         public int Emp_Id{get;set;}
         public string Emp_name{get;set;}
         public string Dept_name{get;set;}
         public bool Equals(Employee other)
        {
            
                return this.Emp_Id.Equals(other.Emp_Id);
            
        }
​
        public override int GetHashCode()
        {
                return this.Emp_Id.GetHashCode();
        }
     }
}

Compilation error (line 1, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 1, col 0): Syntax error.
Compilation error (line 2, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 2, col 0): Syntax error.
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Compilation error (line 3, col 0): Syntax error.
Compilation error (line 4, col 0): Labels are not valid outside methods/multiline lambdas.
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Compilation error (line 5, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 5, col 0): Syntax error.
Compilation error (line 6, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 6, col 0): Syntax error.
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Compilation error (line 7, col 0): Syntax error.
Compilation error (line 8, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 8, col 0): Syntax error.
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Compilation error (line 9, col 0): Syntax error.
Compilation error (line 10, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 10, col 0): Syntax error.
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Compilation error (line 12, col 0): Syntax error.
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Compilation error (line 14, col 0): Labels are not valid outside methods/multiline lambdas.
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Compilation error (line 15, col 0): Syntax error.
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Compilation error (line 16, col 0): Syntax error.
Compilation error (line 17, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 17, col 0): Syntax error.
Compilation error (line 18, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 18, col 0): Syntax error.
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Compilation error (line 19, col 0): Syntax error.
Compilation error (line 20, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 20, col 0): Syntax error.
Compilation error (line 21, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 21, col 0): Syntax error.
Compilation error (line 22, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 22, col 0): Syntax error.
Compilation error (line 23, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 23, col 0): Syntax error.
Compilation error (line 24, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 24, col 0): Syntax error.
Compilation error (line 25, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 25, col 0): Syntax error.
Compilation error (line 26, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 26, col 0): Syntax error.
Compilation error (line 27, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 27, col 0): Syntax error.
Compilation error (line 28, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 28, col 0): Syntax error.
Compilation error (line 29, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 29, col 0): Syntax error.
Compilation error (line 30, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 30, col 0): Syntax error.
Compilation error (line 31, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 31, col 0): Syntax error.
Compilation error (line 32, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 32, col 0): Syntax error.
Compilation error (line 33, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 33, col 0): Syntax error.
Compilation error (line 34, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 34, col 0): Syntax error.
Compilation error (line 35, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 35, col 0): Syntax error.
Compilation error (line 36, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 36, col 0): Syntax error.
Compilation error (line 37, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 37, col 0): Syntax error.
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Compilation error (line 38, col 0): Syntax error.
Compilation error (line 39, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 39, col 0): Syntax error.
Compilation error (line 40, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 40, col 0): Syntax error.
Compilation error (line 41, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 41, col 0): Syntax error.
Compilation error (line 42, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 42, col 0): Syntax error.
Compilation error (line 43, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 43, col 0): Syntax error.
Compilation error (line 44, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 44, col 0): Syntax error.
Compilation error (line 45, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 45, col 0): Syntax error.
Compilation error (line 46, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 46, col 0): Syntax error.
Compilation error (line 47, col 0): Labels are not valid outside methods/multiline lambdas.
Compilation error (line 47, col 0): Syntax error.

Last Run:	7:09:44 am
Compile:	0s
Execute:	0.139s
Memory:	0b
CPU:	0s

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