Java 计算阶乘1

public class MainClass {
   public static void main(String args[]) {
      for (int counter = 0; counter <= 10; counter++) {
         System.out.printf("%d! = %d\n", counter, factorial(counter));
      }
   }

   public static long factorial(long number) {
      if (number <= 1) return 1;
      else return number * factorial(number - 1);
   }
}