C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Linq;
using System.Collections.Generic;
					
public class Program
{
	public static void Main()
	{
		var maList = new List<int>(){ 1, 1, 2, 3};
		
		var first  = maList.FirstOrDefault(x => x == 1);
		var single = maList.SingleOrDefault(x => x == 1);
		
		Console.ReadLine();
	}
}

 
using System;
using System.Linq;
using System.Collections.Generic;
                    
public class Program
{
    public static void Main()
    {
        var maList = new List<int>(){ 1, 1, 2, 3};
        
        var first  = maList.FirstOrDefault(x => x == 1);
        var single = maList.SingleOrDefault(x => x == 1);
        
        Console.ReadLine();
    }
}

Display the number and frequency of number from given array:
---------------------------------------------------------------------
The numbers in the array are:
1,2,3,4,4,5,5,1,1,1

The number and the Frequency are :

Number 1 appears 4 times
Number 2 appears 1 times
Number 3 appears 1 times
Number 4 appears 2 times
Number 5 appears 2 times

Cached Result
Last Run:	1:39:07 am
Compile:	0.01s
Execute:	0.05s
Memory:	3.33Mb
CPU:	0.06s

View IL Code