java排班算法-几班几倒

public static void main(String[] args) {
    String array = "";
    //班组
    String[] dutyArr = {"A组","B组","C组","D组","E组"};
    int dutyNum=dutyArr.length;
    //日期
    int days = getDaysOfMonth(new Date());
    //班次
    String[] classArr = {"早班","中班","晚班","休息","休息"};
    int classNum = classArr.length;
    int allClass=0;
    for (int i=0; i= dutyNum){
               System.out.println(i + 1 + "号排班："+ dutyArr[(j+a)-dutyNum]);
            }
        }
    }
}

/**
 * 获取某个月的天数
 * @param date
 * @return
 */
public static int getDaysOfMonth(Date date) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
}

以下亲测好用

/**
     *
     * @param shiftArray 班次策略集合
     * @param teamArray  班组集合
     * @param betweenDay 间隔天数
     * @param date      排班时间
     * @param scheduleInfoPO
     */
public void saveRecordInfo(List  shiftArray, List teamArray, Integer betweenDay, List date, ScheduleInfoPO scheduleInfoPO) {
        int shiftNum = shiftArray.size();
        int dutyNum = teamArray.size();
        if(dutyNum > shiftNum){
            throw new InterfaceException(ResultEnum.SCHEDULE_ERROR.getCode(),ResultEnum.SCHEDULE_ERROR.getMsg());
        }
        List recordList = new ArrayList<>();
        int t = -1;
        for (Integer dayCount = 0; dayCount <= betweenDay; dayCount++) {
            t++;
            for (int i = 0; i < dutyNum; i++) {
                int y = getOrder(dayCount, shiftNum, dutyNum, i);
                TeamPO teamPO = teamArray.get(i);
                ScheduleResultPO result = new ScheduleResultPO();
                result.setTeamId(teamPO.getId());
                result.setTeamName(teamPO.getTeamName());
                ShiftConfigPO shift = shiftArray.get(y);
                result.setShiftId(shift.getId());
                result.setShiftName(shift.getShiftName());
                result.setScheduleId(scheduleInfoPO.getId());
                result.setProductId(scheduleInfoPO.getProductId());
                result.setScheduleName(scheduleInfoPO.getScheduleName());
                String startTime = shift.getStartTime();
                String endTime = shift.getEndTime();
                String workData = date.get(t);
                if(StringUtils.isNotBlank(startTime)){
                    String workDataTime = workData + " " + endTime;
                    result.setWorkDate(DateUtil.parse(workDataTime));
                } else {
                    result.setWorkDate(DateUtil.parse(workData));
                }
                Date workDate = result.getWorkDate();
                Calendar cal = Calendar.getInstance();
                cal.setTime(workDate);
                result.setYear(cal.get(Calendar.YEAR));
                result.setMonth(cal.get(Calendar.MONTH)+1);
                result.setDay(cal.get(Calendar.DATE));
                // 1、如果结束时间小于开始时间，则结束时间+1天:为交接班提供两个字段
                result = saveWorkStartOrEndDate(result, startTime, endTime, workData);
                recordList.add(result);
            }
        }
        scheduleResultRepository.saveAll(recordList);
    }

public static Integer getOrder(Integer dayCount, Integer classNum, Integer teamCount, Integer teamNum) {
        int temp = (classNum / teamCount);
        return (((dayCount / temp) % teamCount + teamNum) % teamCount) * temp + dayCount % temp;
    }