Java 时间段比较、排序

Java 时间段比较、排序

 

Java代码 

import java.util.Date;import java.util.List;/** * Author: Moses Miao * Time: 11-12-23 上午12:08 * E-mail: [e-mail] */public class TimePeriodUtils {    // 对形如以下格式的时间段排序，注意各个时间段不会有交叉重叠的情况    // 20110101000000-201102015000000, 20110501000000-201107015000000    // 20120101000000-201302015000000, 20111001000000-201112015000000    public void sort(List<TimePeriod> timePeriodList) {        for (int i = 0; i < timePeriodList.size(); i++) {            for (int j = i + 1; j < timePeriodList.size(); j++) {                TimePeriod item1 = timePeriodList.get(i);                TimePeriod item2 = timePeriodList.get(j);                if (item2.getEndTime().compareTo(item1.getStartTime()) <= 0) {                    timePeriodList.set(i, item2);                    timePeriodList.set(j, item1);                }            }        }    }    // 判断period是否与timePeriodList中的时间段存在交叉重叠情况    // 存在返回true， 否则false    // timePeriodList时间段格式如下    // 20110101000000-201102015000000, 20110501000000-201107015000000    // 20120101000000-201302015000000, 20111001000000-201112015000000    public boolean checkDuplicate(TimePeriod period, List<TimePeriod> timePeriodList) {        Date startTime = period.getStartTime();        Date endTime = period.getEndTime();                for (TimePeriod item : timePeriodList) {            Date startTimeItem = item.getStartTime();            Date endTimeItem = item.getEndTime();            if (startTime.compareTo(startTimeItem) >= 0 && startTime.compareTo(endTimeItem) < 0                    || endTime.compareTo(startTimeItem) > 0 && endTime.compareTo(endTimeItem) <= 0                    || startTimeItem.compareTo(startTime) >= 0 && startTimeItem.compareTo(endTime) < 0) {                return true;            }        }                return false;    }        static class TimePeriod {        private Date startTime;                private Date endTime;        public Date getStartTime() {            return startTime;        }        public void setStartTime(Date startTime) {            this.startTime = startTime;        }        public Date getEndTime() {            return endTime;        }        public void setEndTime(Date endTime) {            this.endTime = endTime;        }    }}