How can I calculate a factorial in C# using a library call?

Question

I need to calculate the factorial of numbers up to around 100! in order to determine if a series of coin flip-style data is random, as per this Wikipedia entry on Bayesian p

Answer 1

hello everybody according to this solution i have my own solution where i calculate factorial of array 1D elements. the code is `int[] array = new int[5] { 4,3,4,3,8 };

        int fac = 1;

        int[] facs = new int[array.Length+1];

        for (int i = 0; i < array.Length; i++)
        {
            for (int j = array[i]; j > 0; j--)
            {
                fac *= j;
            }
            facs[i] = fac;
            textBox1.Text += facs[i].ToString() + " ";
            fac = 1;
        }`

copy and paste the code above ^ in the button , it solves factorial of elements of array 1D. best regards.