传进一个时间段，按整小时切割成一个个小时段及稍作变化

最新推荐文章于 2024-07-01 02:25:02 发布

原创最新推荐文章于 2024-07-01 02:25:02 发布 · 3k 阅读

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本文介绍了一种将时间区间按小时及班次进行分割的算法实现。该算法能够接收一个时间区间作为输入，并将其拆分为多个更小的时间段，适用于排程和资源分配等场景。

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//把传进来的Interval按小时分成多份
public List cutTimeToHours(Interval interval){
List intervalList=ListUtils.newArrayList();
Calendar cal = Calendar.getInstance();
Calendar calEnd = Calendar.getInstance();
cal.setTime(interval.getStartTime());
calEnd.setTime(interval.getEndTime());
int year = cal.get(Calendar.YEAR);//获取年份
int month=cal.get(Calendar.MONTH);//获取月份
int day=cal.get(Calendar.DATE);//获取日
int hour=cal.get(Calendar.HOUR_OF_DAY);//小时
int minute=cal.get(Calendar.MINUTE);//分
int second=cal.get(Calendar.SECOND);//秒

    int yearEnd = calEnd.get(Calendar.YEAR);//获取年份
    int monthEnd=calEnd.get(Calendar.MONTH);//获取月份
    int dayEnd=calEnd.get(Calendar.DATE);//获取日
    int hourEnd=calEnd.get(Calendar.HOUR_OF_DAY);//小时
    int minuteEnd=calEnd.get(Calendar.MINUTE);//分
    int secondEnd=calEnd.get(Calendar.SECOND);//秒
    Interval lastInterval=null;
    if(minute>0||second>0) {
        Calendar startCal = Calendar.getInstance();
        Calendar endCal = Calendar.getInstance();
        startCal.set(year, month, day, hour, 0, 0);
        endCal.set(year, month, day, hour, 0, 0);
        endCal.add(Calendar.HOUR,1);
        Date startDate = startCal.getTime();
        Date endDate = endCal.getTime();
        //intervalList.add(new Interval(startDate, endDate));
        cal.set(year, month, day, hour, 0, 0);
    }
    if(minuteEnd>0||secondEnd>0){
        Calendar startCal = Calendar.getInstance();
        Calendar endCal = Calendar.getInstance();
        startCal.set(yearEnd, monthEnd, dayEnd, hourEnd, 0, 0);
        endCal.set(yearEnd, monthEnd, dayEnd, hourEnd, 0, 0);
        Date startDate = startCal.getTime();
        endCal.add(Calendar.HOUR,1);
        Date endDate=endCal.getTime();
        lastInterval=new Interval(startDate, endDate);
        //intervalList.add(new Interval(startDate, endDate));
        calEnd.set(yearEnd, monthEnd, dayEnd, hourEnd, 0, 0);
        calEnd.add(Calendar.HOUR,1);
    }
    while(cal.getTime().getTime()<calEnd.getTime().getTime()){
        Date dateS=cal.getTime();
        cal.add(Calendar.HOUR,1);
        Date dateE=cal.getTime();
        intervalList.add(new Interval(dateS,dateE));
    }
    if(lastInterval!=null) {
        //intervalList.add(lastInterval);
    }
    return intervalList;
}

//把传进来的Interval按照班次分成多份
public List cutTimeToFlights(Interval interval){
List intervalList=ListUtils.newArrayList();
Calendar cal = Calendar.getInstance();
Calendar calEnd = Calendar.getInstance();
cal.setTime(interval.getStartTime());
calEnd.setTime(interval.getEndTime());
int year = cal.get(Calendar.YEAR);//获取年份
int month=cal.get(Calendar.MONTH);//获取月份
int day=cal.get(Calendar.DATE);//获取日
int hour=cal.get(Calendar.HOUR_OF_DAY);//小时

    int yearEnd = calEnd.get(Calendar.YEAR);//获取年份
    int monthEnd=calEnd.get(Calendar.MONTH);//获取月份
    int dayEnd=calEnd.get(Calendar.DATE);//获取日
    int hourEnd=calEnd.get(Calendar.HOUR_OF_DAY);//小时
    Calendar startCal = Calendar.getInstance();
    Calendar endCal = Calendar.getInstance();
    if(hour>=8&&hour<20) {
        startCal.set(year, month, day, 8, 0, 0);
    }else if(hour>=20){
        startCal.set(year, month, day, 20, 0, 0);
    }else{
        startCal.set(year, month, day, 20, 0, 0);
        startCal.add(Calendar.DAY_OF_MONTH,-1);
    }
    if(hourEnd>=8&&hourEnd<20){
        endCal.set(yearEnd, monthEnd, dayEnd, 20, 0, 0);
    }else if(hourEnd<8){
        endCal.set(yearEnd, monthEnd, dayEnd, 8, 0, 0);
    }else{
        endCal.set(yearEnd, monthEnd, dayEnd, 8, 0, 0);
        endCal.add(Calendar.DAY_OF_MONTH,1);
    }
    while(startCal.getTime().getTime()<endCal.getTime().getTime()){
        Date dateS=startCal.getTime();
        startCal.add(Calendar.HOUR_OF_DAY,12);
        Date dateE=startCal.getTime();
        intervalList.add(new Interval(dateS,dateE));
        System.out.println("dateS==>"+dateS.toString()+"   dateE"+dateE.toString());
    }
    return intervalList;
}