tests/Fac.java

   1 package tests;
   2
   3 public class Fac {
   4         public static void main(String args[]) {
   5                 int sum = 0;
   6                 for (int i = 0; i < 10; i++) {
   7                         sum += fac(i);
   8                 }
   9                 System.out.printf("result: 0x%08x\n", sum);
  10                 // System.out.printf("result: 0x%08x\n", facFor(0x10));
  11         }
  12
  13         public static int fac(int a) {
  14                 int b = 1;
  15                 while (a > 0) {
  16                         b *= a;
  17                         a--;
  18                 }
  19                 return b;
  20         }
  21
  22         public static int facFor(int n) {
  23                 int p = 1;
  24                 for(int i = 1; i <= n; i++) {
  25                         p *= i;
  26                 }
  27                 return p;
  28         }
  29 }