出租车问题Readme

TaxiMaintenance

目录

• 背景介绍
• 项目介绍
• 使用说明
  
  • 获取代码
    
    • 方法介绍
    • 使用样例
      

背景介绍

Taximaintenance，即出租车保养问题。本文是单纯的java语言对这个问题进行实现。若应用于实际web项目中，可通过接口对数据库的数据进行操作。

项目介绍

TaxiMaintenance 的设计初衷是给提供一个实时提醒，提醒车主车辆是否即将报废、需要定期保养、需要一万公里行驶车程保养 。当车辆处于已报废或者不需要任何保养时不进行提醒。

使用说明

Taxi成员变量设计

字段 carId purchaseDate brand currentRunningKilometers 类型 String String String int 含义 车辆号 购买日期 品牌名称 目前运行公里数 字段 hasHeavyMaintenance statement 类型 boolean int 含义 有无大修 状态码：默认为7

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状态码

值 0 1 2 3 6 含义 已报废 即将报废 需要定期保养 需要一万公里保养 未报废，其他未知

获取代码

方法介绍：
1. Taxi:
*Taxi(String str)处理从键盘输入的一行数据，根据“”|“”分割字符串并赋值给对应的成员变量
* isWriteOff(String currentTime)判断是否已经报废，若已经报废，更改statement为0；
* isWillWriteOff(String currentTime) 仅允许statement=6的Taxi对象使用该方法判断是否即将过期，若即将过期，更改statement为1；
* timeRelated(String currentTime)仅允许statement=6的Taxi对象使用该方法，判断是否需要定期保养,若需要定期保养，更改statement为2
* distanceRelated()仅允许statement为2或6的Taxi对象使用该方法，判断是否需要运行一万公里保养，若需要，将statement更改为3
代码 :

  /** * Created by misfortune on 2017/10/15. */import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.*;class Taxi{    private String carId;    private String purchaseDate;    private String brand;    private int currentRunningKilometers;    private boolean hasHeavyMaintenance;    private int statment=7;    Taxi(String str){        String []sourceStrArray=str.split("\\|");        carId=sourceStrArray[0];        purchaseDate=sourceStrArray[1];        brand=sourceStrArray[2];        currentRunningKilometers=Integer.parseInt(sourceStrArray[3]);        hasHeavyMaintenance=sourceStrArray[4].equals("T");    }    public String getCarId() {return carId;}    public void setCarId(String carId) {this.carId = carId;}    public String getPurchaseDate() {return purchaseDate;}    public void setPurchaseDate(String purchaseDate) {this.purchaseDate = purchaseDate;}    public String getBrand() {return brand;}    public void setBrand(String brand) {this.brand = brand;}    public int getCurrentRunningKilometers() {return currentRunningKilometers;}    public void setCurrentRunningKilometers(int currentRunningKilometers) {this.currentRunningKilometers = currentRunningKilometers;}    public boolean isHasHeavyMaintenance() {return hasHeavyMaintenance;}    public void setHasHeavyMaintenance(boolean hasHeavyMaintenance) {this.hasHeavyMaintenance = hasHeavyMaintenance;}    public int getStatment() {return statment;}    public void setStatment(int statment) {this.statment = statment;}    public void display(){        System.out.println(getCarId()+"|"+getPurchaseDate()+"|"+getBrand()+"|"+getCurrentRunningKilometers()+"|"+isHasHeavyMaintenance()+"|"+statment);    }    public void isWriteOff(String currentTime)throws ParseException{        //判断是否已经报废        Calendar calendar1=Calendar.getInstance();        Calendar calendar2=Calendar.getInstance();        SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");            calendar1.setTime(sdf.parse(purchaseDate));            calendar2.setTime(sdf.parse(currentTime));        if(hasHeavyMaintenance!=false){            calendar1.add(Calendar.DATE,+1095);        }else calendar1.add(Calendar.DATE,+2190);        if(calendar1.after(calendar2)){            statment=6;//车辆状态为未报废，是否需要提醒保修、是否即将过期未知        } else statment=0;//车辆状态为已报废    }    public void isWillWriteOff(String currentTime)throws ParseException{        if(statment==6){            Calendar calendar1=Calendar.getInstance();            Calendar calendar2=Calendar.getInstance();            SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");            calendar1.setTime(sdf.parse(purchaseDate));            calendar2.setTime(sdf.parse(currentTime));            if(hasHeavyMaintenance!=false){                calendar1.add(Calendar.DATE,+1095);            }else calendar1.add(Calendar.DATE,+2190);            if(calendar1.get(Calendar.YEAR)==calendar2.get(Calendar.YEAR)&&calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)){                    statment=1;            }else {                calendar1.add(Calendar.MONTH,-1);                if(calendar1.get(Calendar.YEAR)==calendar2.get(Calendar.YEAR)&&calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)){                    statment=1;                     }                }            }        }    public void timeRelated(String currentTime)throws ParseException{        if(statment==6){                Calendar calendar1=Calendar.getInstance();                Calendar calendar2=Calendar.getInstance();                SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");                calendar1.setTime(sdf.parse(purchaseDate));                calendar2.setTime(sdf.parse(currentTime));                if(hasHeavyMaintenance!=false){                    for(int i=0;i<12;i++){                        calendar1.add(Calendar.MONTH,+2);                        if(calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)){                            statment=2;                        }                    }                }else {                    calendar1.add(Calendar.YEAR,+3);                    if(calendar1.after(calendar2)){                        calendar1.add(Calendar.YEAR,-3);                        for(int i=0;i<6;i++){                            calendar1.add(Calendar.MONTH,+12);                            if(calendar1.get(Calendar.YEAR)==calendar2.get(Calendar.YEAR)){                                calendar1.add(Calendar.MONTH,-1);                                if(calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)){                                    statment=2;                                    break;                                }                            }                        }                    }else{                        calendar1.add(Calendar.YEAR,-3);                        for(int i=0;i<12;i++){                            calendar1.add(Calendar.MONTH,+6);                            if(calendar1.get(Calendar.YEAR)==calendar2.get(Calendar.YEAR)){                                if(calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)&&calendar1.after(calendar2)){                                    statment=2;                                    break;                                }else {                                    calendar1.add(Calendar.MONTH,-1);                                    if(calendar1.get(Calendar.MONTH)==calendar2.get(Calendar.MONTH)&&calendar1.after(calendar2)){                                        statment=2;                                        break;                                    }                                }                            }                        }                    }                }            }        }    public void distanceRelated(){        if (statment==6) {            if(currentRunningKilometers%10000+500>=10000||currentRunningKilometers%10000==0)statment=3;            //仅需要一万里公里保养提醒        }else if(statment==2){            if(currentRunningKilometers%10000+500>=10000||currentRunningKilometers%10000==0)statment=3;            //当定期保养和一万里保养同时需要进行，按一万公里保养记        }    }}public class TaxiMaintenance {    public static void main(String[] args)throws ParseException{        Scanner sc=new Scanner(System.in);        String currentTime=(sc.nextLine().replaceAll("SubmitDate: ",""));        List<Taxi> taxiList=new ArrayList<Taxi>();        String str=sc.nextLine();        if(str.equals(""))sc.close();        while(!str.equals("")){            taxiList.add(new Taxi(str));            str=sc.nextLine();        }        //System.out.print(taxiList.size());        Taxi []wait=new Taxi[taxiList.size()];        String brand[]=new String[taxiList.size()];        for(int i=0;i<wait.length;i++){            wait[i]=taxiList.get(i);            brand[i]=wait[i].getBrand();            wait[i].isWriteOff(currentTime);            wait[i].isWillWriteOff(currentTime);            wait[i].timeRelated(currentTime);            wait[i].distanceRelated();            //wait[i].display();        }        List list=Arrays.asList(brand);        Set set=new HashSet(list);        String brand1[]=(String[]) set.toArray(new String[0]);        Arrays.sort(brand1,String.CASE_INSENSITIVE_ORDER);        System.out.println("Reminder\n==================\n* Time-related maintenance coming soon...");        for(int i=0;i<brand1.length;i++){            int cout=0;            String ot1=new String();            String ot2=new String();            String ot3=new String();            String ot=new String();            for(int j=0;j<wait.length;j++){                if(wait[j].getBrand().equals(brand1[i])&&wait[j].getStatment()==2){                    cout++;                    if(cout==1) {                        ot1 = brand1[i] + ": " ;                        ot2=" (" + wait[j].getCarId();                    }else if(cout>1){                        ot3=","+wait[j].getCarId();                    }                }                ot=ot1+cout+ot2+ot3;            }                if(!ot.equals("0"))System.out.println(ot+")");        }        System.out.println("* Distance-related maintenance coming soon...");        for(int i=0;i<brand1.length;i++){            int cout=0;            String ot1=new String();            String ot2=new String();            String ot3=new String();            String ot=new String();            for(int j=0;j<wait.length;j++){                if(wait[j].getBrand().equals(brand1[i])&&wait[j].getStatment()==3){                    cout++;                    if(cout==1) {                        ot1 = brand1[i] + ": " ;                        ot2=" (" + wait[j].getCarId();                    }else if(cout>1){                        ot3=","+wait[j].getCarId();                    }                }                ot=ot1+cout+ot2+ot3;            }            if(!ot.equals("0"))System.out.println(ot+")");        }        System.out.println("* Write-off coming soon...");        for(int i=0;i<brand1.length;i++){            int cout=0;            String ot1=new String();            String ot2=new String();            String ot3=new String();            String ot=new String();            for(int j=0;j<wait.length;j++){                if(wait[j].getBrand().equals(brand1[i])&&wait[j].getStatment()==1){                    cout++;                    if(cout==1) {                        ot1 = brand1[i] + ": " ;                        ot2=" (" + wait[j].getCarId();                    }else if(cout>1){                        ot3=","+wait[j].getCarId();                    }                }                ot=ot1+cout+ot2+ot3;            }            if(!ot.equals("0"))System.out.println(ot+")");        }        sc.close();    }}

使用样例
本程序使用多一次回车作为输出结束，采用动态数组接收键盘输入的数据，可以输入多组数据。
主方法中设置有(已注释)显示集合size()的方法和显示车辆信息(含处理后的statement值)， 可以通过控制台显示的statement值及其含义测试程序是否正确
*范例 SubmitDate: 2030/09/01
CAR0001|2025/04/05|Porsche|10000|F
CAR0002|2029/10/14|Porsche|9000|F
CAR0003|2026/08/17|Porsche|13000|F
CAR0004|2027/11/01|BYD|23000|T
CAR0005|2027/01/11|BYD|19500|F
CAR0006|2029/07/01|Audi|10001|T
CAR0007|2028/04/19|Ford|9800|F
CAR0008|2027/07/10|Ford|15000|T
CAR0009|2024/10/22|Ford|90300|F
输出：

*测试用例一SubmitDate: 2030/09/01
CAR0001|2025/04/05|Porsche|10000|F
CAR0002|2029/10/14|Porsche|9000|F
CAR0003|2026/08/17|Porsche|13000|F
CAR0004|2027/11/01|BYD|23000|T
CAR0005|2027/01/11|BYD|19500|F
CAR0006|2029/07/01|Audi|10001|T
CAR0007|2028/04/19|Ford|9800|F
CAR0008|2027/07/10|Ford|15000|T
CAR0009|2024/10/22|Ford|90300|F
输出：

范例2SubmitDate: 2050/05/01
CAR0001|2044/05/01|Volkswagen|65535|F
CAR0002|2044/05/03|BMW|100001|F
CAR0003|2047/05/02|Mercedes-Benz|37789|T
CAR0004|2047/05/03|Honda|59908|T
CAR0005|2049/12/10|Peugeot|49999|F
CAR0006|2046/11/15|Jeep|2000|F
CAR0007|2046/11/16|Jeep|5000|F
输出：