Factorial value : Math « Development Class « C# / C Sharp

1. C# / C Sharp
2. Development Class
3. Math

Factorial value

        

using System.Collections.Generic;
using System.Linq;
using System;

public static class Utilities
{
    public static ulong Factorial(uint value)
    {
        // ulong.MaxValue is smaller than the result of 21!
        if (value > 20)
        {
            throw new ArgumentException("value");
        }

        if (value == 0)
        {
            return 1;
        }
        else
        {
            return value * Factorial(value - 1);
        }
    }

}

   
    
    
    
    
    
    
    
  

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