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    //获取周
    func getWeekDay(year:Int,month:Int,day:Int) ->Int{
        var dateFormatter:NSDateFormatter = NSDateFormatter();
        dateFormatter.dateFormat = "yyyy/MM/dd";
        var date:NSDate? = dateFormatter.dateFromString(String(format:"%04d/%02d/%02d",year,month,day));
        if date != nil {
            var calendar:NSCalendar = NSCalendar.currentCalendar()
            var dateComp:NSDateComponents = calendar.components(NSCalendarUnit.WeekdayCalendarUnit, fromDate: date!)
            return dateComp.weekday;
        }
        return 0;
    }