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                         // fac(i);
   8                         sum += fac(i);
   9                 }
  10                 id(sum);
  11                 // System.out.printf("fac: 0x%08x\n", sum);
  12         }
  13
  14         public static int id(int i) {
  15                 return i;
  16         }
  17
  18         public static int fac(int a) {
  19                 int b = 1;
  20                 while (a > 0) {
  21                         b *= a;
  22                         a--;
  23                 }
  24                 return b;
  25         }
  26
  27         public static int facFor(int n){
  28                 int p = 1;
  29                 for(int i=1;i<=n;i++)
  30                 {
  31                         p = p * i;
  32                 }
  33                 return p;
  34         }
  35 }