[Top 20 Coding Interview] 11. Calulate Factorial using Recursion (C#)

Calulate Factorial using Recursion

How to calculate factorial using recursion ?

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C#

class Program
{
    static int Factorial(int n)
    {
        return n == 1 ? 1 : n * Factorial(n - 1);
    }
    static void Main(string[] args)
    {
        System.Console.WriteLine(string.Format("{0} Factorial = {1}", 10, Factorial(10)));
    }
}