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周五閒來無事，基於上一篇關於淺析12306售票算法(java版)實際，停止了java編碼理論供列位讀者參考（以下為相干代碼的簡略描寫）
1.訂票對象類
1.1初始化一列車箱的單子信息
/**
* 生成Ticket信息
*
* @param train
* @return
*/
public static List<Ticket> initTicketList(Train train) {
List<Ticket> result = new ArrayList<Ticket>();
Map<String, Integer> seatMap = train.getSeatTotalNum();
for (Entry<String, Integer> entry : seatMap.entrySet()) {
int ticketSize = entry.getValue();
String ticketType = entry.getKey();
for (int i = 0; i < ticketSize; i++) {
int saleChannel = (int) (Math.random() * 10) % 8;
Ticket ticket = new Ticket();
ticket.setSaleChannel(saleChannel);
ticket.setTicketType(ticketType);
ticket.setGuid(UUID.randomUUID().toString());
ticket.setFromDate(train.getFromDate());
ticket.setTicketFlag(CommonUtil.initTicketFlag(train));
ticket.setTrainNo(train.getTrainNo());
result.add(ticket);
}
}
return result;
}
1.2 生成站點購票（好比說第停止移位便可如第1站1，第二站‘10' 這裡前往的十進制的）
/**
* 創立
* @param i
* @param stationNum
* @return
*/
public static String buidTicket(int i, int stationNum) {
BigInteger temp = new BigInteger("0");
for (int j = i; j < stationNum; j++) {
temp = temp.or(new BigInteger(buidTicket(j)));
}
return temp.shiftRight(1).toString();
}
1.3 訂票主法式，這裡一次只定一張票（A=A|B）
/**
* 依據挑選前提獲得對應的車次
* @param ticketStr
* @param ticketList
* @param condition
* @return
*/
public static Order createOrderByCondition(String ticketStr,List<Ticket> ticketList,Map condition){
Order tempOrder = null;
for (Ticket ticket : ticketList) {
BigInteger toTicket = new BigInteger(ticketStr);
BigInteger fromTicket = new BigInteger(ticket.getTicketFlag());
// 假如可以訂票，那末久停止扣除庫存&&
// (ticket.getSaleChannel()==(ticket.getSaleChannel()|1))
if (canTicket(fromTicket, toTicket)
&&ticket.getTicketType().equals(condition.get("ticketType").toString())
//&&(ticket.getSaleChannel()==(ticket.getSaleChannel()|2))
) {
tempOrder = new Order();
tempOrder.setOrderId(UUID.randomUUID().toString());
tempOrder.setSeatType(ticket.getTicketType());
tempOrder.setTicketFlag(toTicket.toString());
tempOrder.setTrainNO(ticket.getTrainNo());
tempOrder.setFromDate(ticket.getFromDate());
tempOrder.setSaleChannel(ticket.getSaleChannel());
tempOrder.setTicketGuid(ticket.getGuid());
ticket.setTicketFlag(fromTicket.or(toTicket).toString());
break;
}
}
return tempOrder;
}
1.4 斷定能否郵票，A=~(~A|B)
/**
* 訂票斷定能否可以訂票
*
* @param fromTicket
* @param toTicket
* @return
*/
private static boolean canTicket(BigInteger fromTicket, BigInteger toTicket) {
return fromTicket.equals(fromTicket.not().or(toTicket).not());
}
2.定單實體（保存需要的定單信息）
package com.train.ticket;
/**
* 定單實體
* @author guo_zhifeng
*
*/
public class Order {
private String orderId;
private String ticketGuid;//單子id
private String ticketFlag;//訂票標志
private String seatType;//坐位類型
private String fromDate;//發車日期
private String trainNO;//列車編號
private int saleChannel;//發賣渠道
public String getOrderId() {
return orderId;
}
public void setOrderId(String orderId) {
this.orderId = orderId;
}
public String getTicketGuid() {
return ticketGuid;
}
public void setTicketGuid(String ticketGuid) {
this.ticketGuid = ticketGuid;
}
public String getTicketFlag() {
return ticketFlag;
}
public void setTicketFlag(String ticketFlag) {
this.ticketFlag = ticketFlag;
}
public String getSeatType() {
return seatType;
}
public void setSeatType(String seatType) {
this.seatType = seatType;
}
public String getFromDate() {
return fromDate;
}
public void setFromDate(String fromDate) {
this.fromDate = fromDate;
}
public String getTrainNO() {
return trainNO;
}
public void setTrainNO(String trainNO) {
this.trainNO = trainNO;
}
public int getSaleChannel() {
return saleChannel;
}
public void setSaleChannel(int saleChannel) {
this.saleChannel = saleChannel;
}
}
3.票務虛體（保存需要的票務信息）
package com.train.ticket;
/**
* 票務虛體
* @author guo_zhifeng
*
*/
public class Ticket {
private String ticketFlag;
private String ticketType;
private int saleChannel;
private String trainNo;
private String guid;
private String fromDate;//發車日期
public String getGuid() {
return guid;
}
public void setGuid(String guid) {
this.guid = guid;
}
public String getTrainNo() {
return trainNo;
}
public void setTrainNo(String trainNo) {
this.trainNo = trainNo;
}
public String getTicketFlag() {
return ticketFlag;
}
public void setTicketFlag(String ticketFlag) {
this.ticketFlag = ticketFlag;
}
public String getTicketType() {
return ticketType;
}
public void setTicketType(String ticketType) {
this.ticketType = ticketType;
}
public int getSaleChannel() {
return saleChannel;
}
public void setSaleChannel(int saleChannel) {
this.saleChannel = saleChannel;
}
public String getFromDate() {
return fromDate;
}
public void setFromDate(String fromDate) {
this.fromDate = fromDate;
}
}
4.列車初始化信息（只停止重要信息）
package com.train.ticket;
import java.util.Map;
/**
* 某一趟的列車的信息
* @author guo_zhifeng
*
*/
public class Train {
private String trainNo;// 火車編號
private int stationNum;// 車站數目
private Map<String, Integer> seatTotalNum;// 各類坐位的數目
private String fromDate;
public String getFromDate() {
return fromDate;
}
public void setFromDate(String fromDate) {
this.fromDate = fromDate;
}
public String getTrainNo() {
return trainNo;
}
public void setTrainNo(String trainNo) {
this.trainNo = trainNo;
}
public int getStationNum() {
return stationNum;
}
public void setStationNum(int stationNum) {
this.stationNum = stationNum;
}
public Map<String, Integer> getSeatTotalNum() {
return seatTotalNum;
}
public void setSeatTotalNum(Map<String, Integer> seatTotalNum) {
this.seatTotalNum = seatTotalNum;
}
}
5.主法式
5.1初始化一列車箱
5.2依照逐站購票的情勢，最年夜化 即 AB BC CD DE EF等等
5.3輸入耗不時間
package com.train.main;
import java.io.File;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.train.ticket.Order;
import com.train.ticket.Ticket;
import com.train.ticket.Train;
import com.train.util.CommonUtil;
public class MainTest {
public static void main(String[] args) {
Train train = new Train();
train.setTrainNo("SA");
train.setFromDate("//");
train.setStationNum();
Map<String, Integer> seatMap = new HashMap<String, Integer>();
seatMap.put("商務座", );
seatMap.put("一等座", );
seatMap.put("二等座", );
train.setSeatTotalNum(seatMap);
// 生成單子
System.out.println("初始化列車中的票");
List<Ticket> ticketList = CommonUtil.initTicketList(train);
String fileName = "D:\\RESULT.txt";
File f = new File(fileName);
if(f.exists()) f.delete();
long startTime = System.currentTimeMillis();
//int i = ;
//for (Ticket ticket : ticketList) {
// CommonUtil.appendMethodA(fileName,
// i + "||" + CommonUtil.toJSON(ticket) + "\n", true);
// i++;
//}
System.out.println("開端訂票");
long beginTime = System.currentTimeMillis();
List<Order> orderResult = new ArrayList<Order>();
for (int j = ; j < train.getStationNum() - ; j++) {
String ticketStr = CommonUtil.buidTicket(j);
//String ticketStr = CommonUtil.buidTicket(,train.getStationNum());;
//System.exit();
List<Order> tempListOrder = CommonUtil.createOrderList(ticketStr,
ticketList, train);
orderResult.addAll(tempListOrder);
}
long endTime = System.currentTimeMillis();
System.out.println("訂票完成");
//int m = ;
// for (Ticket ticket : ticketList) {
// String temp = m + "||" + CommonUtil.toJSON(ticket) + ",";
// // System.out.println(temp);
// CommonUtil.appendMethodA(fileName, temp, true);
// m++;
// }
// int k = ;
// for (Order order : orderResult) {
// String temp = order.getOrderId()
// + "||" + order.getSaleChannel()
// + "||" + order.getFromDate()
// + "||" + order.getSeatType()
// + "||" + order.getTicketGuid()
// + "||" + order.getTrainNO()
// + "||" + order.getTicketFlag()
// + "||" + new BigInteger(order.getTicketFlag()).toString()
// + "||" +k;
// CommonUtil.appendMethodA(fileName,temp, true);
// k++;
// }
long eedTime = System.currentTimeMillis();
System.out.println("生成定單" + orderResult.size() + "||耗不時間："
+ (endTime - beginTime) + "毫秒");
System.out.println("每秒鐘生成單據數(逐張訂票)"+ new BigDecimal(orderResult.size()).multiply(new BigDecimal()).divide(new BigDecimal(endTime - beginTime),,BigDecimal.ROUND_HALF_DOWN));
System.out.println("履行終了");
}
}
6.運轉成果
以上所述是小編給年夜家引見的Java代碼理論12306售票算法(二)，願望對年夜家有所贊助!
