/*
 *   Intro to Programming CSE 1310
 * University of Texas at Arlington
 */

package code23octf18recur;

import java.util.Random;
import java.util.Scanner;

/**
 *
 * @author jcmtiernan
 */
public class Code23OctF18Recur 
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) 
    {
        int count;
        long value;
        Random rand = new Random();
        /* ** Generate random number using Math.random
         * Math.random generates a double between 0 and 1 so
         * multiply the value by something to increase the range
        count = (int) (Math.random() * 20);
        */
        /* ** Generate random number using Random class
         * Create an object of the Random class (rand in this example)
         * use the methods of the Random class to generate ints or doubles
         * .nextInt method can have an upper bound given in parentheses (20)
        */
        count = rand.nextInt(20);
        System.out.println("Random input for factorial is "+count);
        //Scanner input = new Scanner(System.in);
        //System.out.println("Enter a value to take the factorial of: ");
        //count = input.nextInt();
        value = fact(count);
        System.out.println("The factorial of "+count+" is "+value);
    }
    public static long fact(int k)
    {
        long temp;
        if (k > 0)
        {
            temp = k * fact(k - 1);
            System.out.println("for k = "+k+" temp is "+temp);
            return temp;
        }
        return 1;
    }
}