Task

Write a program or a script that returns the date of the last Fridays of each month of a given year.

The year may be given through any simple input method in your language (command line, std in, etc).



Example of an expected output:

./last_fridays 2012
2012-01-27
2012-02-24
2012-03-30
2012-04-27
2012-05-25
2012-06-29
2012-07-27
2012-08-31
2012-09-28
2012-10-26
2012-11-30
2012-12-28



Related tasks
 Five weekends
 Day of the week
 Find the last Sunday of each month


int(0..1) last_friday(object day)
{ 
   return day->week_day() == 5 && 
          day->month_day() > day->month()->number_of_days()-7; 
}
 
int main(int argc, array argv)
{
    array days = filter(Calendar.Year((int)argv[1])->months()->days()[*], last_friday);
    write("%{%s\n%}", days->format_ymd());
    return 0;
}