public class jiecheng {
public static int f(int num) {
if(num==0||num==1) {
return 1;
}
else {
return f(num-1)*num;
}
}
public static void main (String[] aa) {
System.out.println( f(5));
}
}
public static int f(int num) {
if(num==0||num==1) {
return 1;
}
else {
return f(num-1)*num;
}
}
public static void main (String[] aa) {
System.out.println( f(5));
}
}