经典阶乘与非阶乘

/* 来自 nowjava.com - 时  代  Java*/

public class Main {

  public static void main(String[] args) {

    int n = 5;

    long fact;

    fact = factorial(n);

    System.out.println("The factorial of " + n + " is " + fact + ".");

  }


  private static long factorial(int n) {

    long f = 1;

    for (int i = 1; i <= n; i++)

      f = f * i;

    return f;

  }


}