HJL777

博客作业(3)

前言

本次博客是PTA6~8习题总结,侧重于电信计费,循序渐进通过增加功能来增大难度

PTA6

1、 电信计费系列1-座机计费

 

实现一个简单的电信计费程序:
假设南昌市电信分公司针对市内座机用户采用的计费方式:
月租20元,接电话免费,市内拨打电话0.1元/分钟,省内长途0.3元/分钟,国内长途拨打0.6元/分钟。不足一分钟按一分钟计。
南昌市的区号:0791,江西省内各地市区号包括:0790~0799以及0701。

输入格式:
输入信息包括两种类型
1、逐行输入南昌市用户开户的信息,每行一个用户,
格式:u-号码 计费类型 (计费类型包括:0-座机 1-手机实时计费 2-手机A套餐)
例如:u-079186300001 0
座机号码除区号外由是7-8位数字组成。
本题只考虑计费类型0-座机计费,电信系列2、3题会逐步增加计费类型。
2、逐行输入本月某些用户的通讯信息,通讯信息格式:
座机呼叫座机:t-主叫号码 接听号码 起始时间 结束时间
t-079186330022 058686330022 2022.1.3 10:00:25 2022.1.3 10:05:11
以上四项内容之间以一个英文空格分隔,
时间必须符合"yyyy.MM.dd HH:mm:ss"格式。提示:使用SimpleDateFormat类。
以上两类信息,先输入所有开户信息,再输入所有通讯信息,最后一行以“end”结束。
注意:
本题非法输入只做格式非法的判断,不做内容是否合理的判断(时间除外,否则无法计算),比如:
1、输入的所有通讯信息均认为是同一个月的通讯信息,不做日期是否在同一个月还是多个月的判定,直接将通讯费用累加,因此月租只计算一次。
2、记录中如果同一电话号码的多条通话记录时间出现重合,这种情况也不做判断,直接 计算每条记录的费用并累加。
3、用户区号不为南昌市的区号也作为正常用户处理。

输出格式:
根据输入的详细通讯信息,计算所有已开户的用户的当月费用(精确到小数点后2位,
单位元)。假设每个用户初始余额是100元。
每条通讯信息单独计费后累加,不是将所有时间累计后统一计费。
格式:号码+英文空格符+总的话费+英文空格符+余额
每个用户一行,用户之间按号码字符从小到大排序。

错误处理:
输入数据中出现的不符合格式要求的行一律忽略。

建议类图:
参见图1、2、3,可根据理解自行调整:

 

 

 

图1
图1中User是用户类,包括属性:
userRecords (用户记录)、balance(余额)、chargeMode(计费方式)、number(号码)。

ChargeMode是计费方式的抽象类:
chargeRules是计费方式所包含的各种计费规则的集合,ChargeRule类的定义见图3。
getMonthlyRent()方法用于返回月租(monthlyRent)。

UserRecords是用户记录类,保存用户各种通话、短信的记录,
各种计费规则将使用其中的部分或者全部记录。
其属性从上到下依次是:
市内拨打电话、省内(不含市内)拨打电话、省外拨打电话、
市内接听电话、省内(不含市内)接听电话、省外接听电话的记录
以及发送短信、接收短信的记录。

 

 


图2
图2中CommunicationRecord是抽象的通讯记录类:
包含callingNumber拨打号码、answerNumber接听号码两个属性。
CallRecord(通话记录)、MessageRecord(短信记录)是它的子类。

CallRecord(通话记录类)包含属性:
通话的起始、结束时间以及
拨号地点的区号(callingAddressAreaCode)、接听地点的区号(answerAddressAreaCode)。
区号用于记录在哪个地点拨打和接听的电话。座机无法移动,就是本机区号,如果是手机号,则会有差异。

 

 


图3
图3是计费规则的相关类,这些类的核心方法是:
calCost(ArrayList<CallRecord> callRecords)。
该方法针根据输入参数callRecords中的所有记录计算某用户的某一项费用;如市话费。
输入参数callRecords的约束条件:必须是某一个用户的符合计费规则要求的所有记录。

LandPhoneInCityRule、LandPhoneInProvinceRule、LandPhoneInLandRule三个类分别是
座机拨打市内、省内、省外电话的计费规则类,用于实现这三种情况的费用计算。
(提示:可以从UserRecords类中获取各种类型的callRecords)。
后续扩展说明:
后续题目集将增加手机用户,手机用户的计费方式中除了与座机计费类似的主叫通话费之外,还包含市外接听电话的漫游费以及发短信的费用。在本题的设计时可统一考虑。
通话记录中,手机需要额外记录拨打/接听的地点的区号,比如:
座机打手机:t-主叫号码 接听号码 接听地点区号 起始时间 结束时间
t-079186330022 13305862264 020 2022.1.3 10:00:25 2022.1.3 10:05:11
手机互打:t-主叫号码 拨号地点 接听号码 接听地点区号 起始时间 结束时间
t-18907910010 0791 13305862264 0371 2022.1.3 10:00:25 2022.1.3 10:05:11
短信的格式:m-主叫号码,接收号码,短信内容
m-18907910010 13305862264 welcome to jiangxi
m-13305862264 18907910010 thank you

输入样例:
在这里给出一组输入。例如:

u-079186300001 0
t-079186300001 058686330022 2022.1.3 10:00:25 2022.1.3 10:05:25
end
输出样例:
在这里给出相应的输出。例如:

079186300001 3.0 77.0

代码:

import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.Scanner;

public class Main {
    
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        ArrayList<User> us = new ArrayList<User>();
        DecimalFormat x1 = new DecimalFormat("###.0#");
        ArrayList<CallRecord> callRecords = new ArrayList<CallRecord>();
    
        
        while(true)
        {
            String[] arry = null;
            Date starttime=null;
            Date endtime=null;
            String n=in.nextLine();
            if(n.equals("end")) {
                break;}
            if(n.matches("u-079[\\d]{1}[\\d]{7,9} 0")||n.matches("u-0701[\\d]{7,9} 0")||n.matches("t-[\\d]{11,12}\\s[\\d]{11,12}\\s[\\d]{4}.[1-12].[1-31]\\s([01]?[0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]\\s[\\d]{4}.[1-12].[1-31]\\s([01]?[0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]"))
                {             
                    arry=n.split("-| ");                    
                    if(arry[0].equals("t")) {
                        CallRecord callRecord = new CallRecord();
                        String answerareaCode,callareaCode;//接听区号;拨打区号
                        callareaCode = arry[1].substring(0, 4);//赋值
                        answerareaCode = arry[2].substring(0, 4);//赋值
                        callRecord.setCallingAddressAreaCode(callareaCode);
                        callRecord.setAnswerAddressAreaCode(answerareaCode);
                        callRecord.setCallingNumber(arry[1]);
                        callRecord.setAnswerNumber(arry[2]);
                        SimpleDateFormat time = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
                        try {
                            starttime = time.parse(arry[3]+" "+arry[4]);
                        } catch (ParseException e) {
                            e.printStackTrace();
                        }
                        
                        try {
                            endtime = time.parse(arry[5]+" "+arry[6]);
                        } catch (ParseException e1) {
                            e1.printStackTrace();
                        }
                        callRecord.setStartTime(starttime);//开始时间
                        callRecord.setEndTime(endtime);//结束时间
                        callRecords.add(callRecord);//添加用户记录
                    }
                    
                    if(arry[0].equals("u")){
                        String areaCode;
                        CallRecord callRecord = new CallRecord();      
                        LandlinePhoneCharging lip = new LandlinePhoneCharging();//座机
                        boolean decide = true;
                        areaCode = arry[1].substring(0, 4);
                        callRecord.setCallingAddressAreaCode(areaCode);
                        for(User user : us) 
                        {
                            if(user.getNumber().equals(arry[1]))
                                decide=false;
                        }
                        if(decide==true) {
                            User u = new User(lip,arry[1]);
                            us.add(u);
                        }
                    }
                    
                    
                   
                }
        }
        for(int i=0;i<us.size();i++) {
            UserRecords u=new UserRecords();
            for(int j=0;j<callRecords.size();j++) {
                CallRecord a=callRecords.get(j);
                String callnumber=a.callnumber;
                if(us.get(i).number.equals(callnumber)) {
                    if(a.getAnswerAddressAreaCode().matches("0791"))u.addCallingInCityRecords(a);
                    else if(a.getAnswerAddressAreaCode().matches("0701"))u.addCallingInProvinceRecords(a);
                    else if(a.getAnswerAddressAreaCode().matches("079[0-9]"))u.addCallingInProvinceRecords(a);
                    else u.addCallingInLandRecords(a);
                }
                
            }
            us.get(i).setUserRecords(u);
        }
Collections.sort(us,new Comparator<User>() {
    @Override
    public int compare(User o1, User o2) {
        // TODO Auto-generated method stub
        double x=Double.parseDouble(o1.getNumber());
        double y=Double.parseDouble(o2.getNumber());
        return (int) (x-y);

    }
});
        for(User u : us) {
            double cost=Double.parseDouble(x1.format(u.calCost()));
            double balance=Double.parseDouble(x1.format(u.calBalance()));
            System.out.println(u.getNumber()+" "+cost+" "+balance);
        }
        in.close();
        
    }
    
}
abstract class CallChargeRule extends ChargeRule {
    public abstract double calCost(ArrayList<CallRecord>callRecords);

}
 class CallRecord extends CommunicationRecord{
    Date startTime;
    Date endTime;
    String callingAddressAreaCode;
    String answerAddressAreaCode;
    String callnumber;
    String answernumber;
    Date getStartTime() {
        return startTime;
    }
    void setStartTime(Date starttime2) {
        this.startTime=(Date) starttime2;
    }
    Date getEndTIme() {
        return endTime;
    }
    void setEndTime(Date endtime2) {
        this.endTime=(Date) endtime2;
    }
    String getCallingAddressAreaCode() {
        return callingAddressAreaCode;
    }
    void setCallingAddressAreaCode(String callingAddressAreaCode) {
        this.callingAddressAreaCode=callingAddressAreaCode;
    }
    String getAnswerAddressAreaCode() {
        return answerAddressAreaCode;
    }
    void setAnswerAddressAreaCode(String answerAddressAreaCode) {
        this.answerAddressAreaCode=answerAddressAreaCode;
    }
    public void setCallingNumber(String string) {
        this.callnumber=string;
        
    }
    public void setAnswerNumber(String string) {
        this.answernumber=string;
    }

    
    
}
abstract class   ChargeMode {
    private ArrayList<ChargeRule> chargeRules= new ArrayList<>();
    public ArrayList<ChargeRule> getChargeRule(){
        return chargeRules;
    }
    public  void setChargeRules(ArrayList<ChargeRule> chargeRules) {
        this.chargeRules= chargeRules;
    }
    public abstract double calCost(UserRecords userRecords);
    abstract double getMonthlyRent() ;

}
abstract class ChargeRule {

}
class CommunicationRecord {
    private String callingNumber;
    private String answerNumber;
    public String getCallingNumber() {
        return callingNumber;
    }
    public void setCallingNumber(String callingNumber) {
        this.callingNumber=callingNumber;
    }
    public String getAnswerNumber() {
        return answerNumber;
    }
    public void setAnswerNumber(String answerNumber) {
        this.answerNumber=answerNumber;
    }

}


class LandlinePhoneCharging extends ChargeMode   {
    double monthlyRent = 20;
    public double calCost(UserRecords userRecords) {
        double sum = 0.0;
        LandPhoneInlandRule p1 = new LandPhoneInlandRule();
        LandPhonelnCityRule p2 = new LandPhonelnCityRule();
        LandPhonelnProvinceRule p3 = new LandPhonelnProvinceRule();
        double sum1= sum+p1.calCost(userRecords.getCallingInLandRecords());
        double sum2=sum+p2.calCost(userRecords.getCallingInCityRecords());
        double sum3=sum+p3.calCost(userRecords.getCallingInProvinceRecords());
        return sum1+sum2+sum3;

        
    }
    public double getMonthlyRent() {
        return monthlyRent;
    }

}
class LandPhoneInlandRule extends CallChargeRule{

    @Override
    public double calCost(ArrayList<CallRecord> callRecords) {
            double sum=0.0;
            for(int i=0;i<callRecords.size();i++)
            {
                double s = callRecords.get(i).getEndTIme().getTime()-callRecords.get(i).getStartTime().getTime();
                s=s/1000.0/60;//分钟
                if(s%1==0) {
                    sum+=s*0.6;
                }
                else {
                    double a=s%1;
                    s=s-a+1;
                    sum+=s*0.6;
                }
                
            }
            return sum;
        }

    }

 class LandPhonelnCityRule extends CallChargeRule {

    @Override
    public double calCost(ArrayList<CallRecord> callRecords) {
        double sum=0;
        for(int i=0;i<callRecords.size();i++)
        {
            double s = callRecords.get(i).getEndTIme().getTime()-callRecords.get(i).getStartTime().getTime();
            
            s=s/1000.0/60;//分钟
            if(s%1==0) {
                sum+=s*0.1;
            }
            else {
                double a=s%1;
                s=s-a+1;
                sum+=s*0.1;
            }
        }
        return sum;
    }

}
class LandPhonelnProvinceRule extends CallChargeRule{

    @Override
    public double calCost(ArrayList<CallRecord> callRecords) {
        double sum=0;
        for(int i=0;i<callRecords.size();i++)
        {
            double s = callRecords.get(i).getEndTIme().getTime()-callRecords.get(i).getStartTime().getTime();
            s=s/1000.0/60;//分钟
            if(s%1==0) {
                sum+=s*0.3;
            }
            else {
                double a=s%1;
                s=s-a+1;
                sum+=s*0.3;
            }
        }
        return sum;

}
}





class MessageRecord extends CommunicationRecord {
    String message;
    String getMessage() {
        return message;
    }
    void setMessage(String message) {
        this.message=message;
    }

}
class User {
    UserRecords userRecords = new UserRecords();
    double balance = 100;
    ChargeMode chargeMode;
    String number;

    User(ChargeMode chargeMode,String number){
        this.chargeMode=chargeMode;
        this.number=number;
    }
    double calBalance() {
        double a = balance-(calCost()+chargeMode.getMonthlyRent());
        return a;
    }
    double calCost() {
        double s =chargeMode.calCost(userRecords);
        return s;
    }
    UserRecords getUserRecords() {
        return userRecords;
    }
    void setUserRecords(UserRecords userRecords) {
        this.userRecords=userRecords;
    }
    double getBalance() {
        return balance;
    }
    ChargeMode getChargeMode() {
        return chargeMode;
    }
    void setChargeMode(ChargeMode chargeMode) {
        this.chargeMode = chargeMode;    
    }
    String getNumber() {
        return number;        
    }
    void setNumber(String number) {
        this.number = number;        
    }
}
class UserRecords {
    ArrayList<CallRecord>callinglnCityRecords = new ArrayList<CallRecord>();
    ArrayList<CallRecord>callinglnProvinceRecords = new ArrayList<CallRecord>();
    ArrayList<CallRecord>callinglnLandRecords = new ArrayList<CallRecord>();
    ArrayList<CallRecord>answerlnCityRecords = new ArrayList<CallRecord>();
    ArrayList<CallRecord>answerlnProvinceRecords = new ArrayList<CallRecord>();
    ArrayList<CallRecord>answerlnLandRecords = new ArrayList<CallRecord>();
    ArrayList<MessageRecord>sendMessageRecords = new ArrayList<MessageRecord>();
    ArrayList<MessageRecord>receiveMessageRecords = new ArrayList<MessageRecord>();
    public void addCallingInCityRecords (CallRecord callRecord) {
        callinglnCityRecords.add(callRecord);
    }
    public void addCallingInProvinceRecords (CallRecord callRecord) {
        callinglnProvinceRecords.add(callRecord);
    }
    public void addCallingInLandRecords (CallRecord callRecord) {
        callinglnLandRecords.add(callRecord);
    }
    public void addAnswerInCityRecords (CallRecord answerRecord) {
        answerlnCityRecords.add(answerRecord);
    }
    public void addAnswerInProvinceRecords (CallRecord answerRecord) {
        answerlnProvinceRecords.add(answerRecord);
    }
    public void addAnswerInLandRecords (CallRecord answerRecord) {
        answerlnLandRecords.add(answerRecord);
    }

    public void addSendMessageRecords (MessageRecord sendMessageRecord) {
        sendMessageRecords.add(sendMessageRecord);
    }
    public void addReceiveMessageRecords (MessageRecord receiveMessageRecord) {
        receiveMessageRecords.add(receiveMessageRecord);
    }
    public ArrayList<MessageRecord> getSendMessageRecords (){
        return this.sendMessageRecords;
    }
    public ArrayList<MessageRecord> getReceiveMessageRecords (){
        return this.receiveMessageRecords;
    }
    public ArrayList<CallRecord> getCallingInCityRecords (){
        return this.callinglnCityRecords;
    }
    public ArrayList<CallRecord> getCallingInProvinceRecords (){
        return this.callinglnProvinceRecords;
    }
    public ArrayList<CallRecord> getCallingInLandRecords (){
        return this.callinglnLandRecords;
    }
    public ArrayList<CallRecord> getAnswerInCityRecords (){
        return this.answerlnCityRecords;
    }
    public ArrayList<CallRecord> getAnswerInProvinceRecords (){
        return this.callinglnProvinceRecords;
    }
    public ArrayList<CallRecord> getAnswerInLandRecords (){
        return this.callinglnLandRecords;
    }


}
View Code

 类图:

 

 

 

 

 

 

 

 小结:因为是第一次接触电信计费相关问题,规则了解不熟练,所以写的时候很费劲,功能不全面或者不正确,有很多逻辑上的错误,变量很多,有时候一天写不完,第二天再去看的时候就会网点有些变量名,需要对前一天的代码进行复习,往往在这个过程中可能会解决掉之前困惑自己的问题。

2、多态测试

 

定义容器Container接口。模拟实现一个容器类层次结构,并进行接口的实现、抽象方法重写和多态机制测试。各容器类实现求表面积、体积的方法。

定义接口Container:
属性:
public static final double pi=3.1415926;
抽象方法:
public abstract double area();
public abstract double volume();
static double sumofArea(Container c[]);
static double sumofVolume(Container c[]);
其中两个静态方法分别计算返回容器数组中所有对象的面积之和、周长之和;
定义Cube类、Cylinder类均实现自Container接口。
Cube类(属性:边长double类型)、Cylinder类(属性:底圆半径、高,double类型)。
输入格式:
第一行n表示对象个数,对象类型用cube、cylinder区分,cube表示立方体对象,后面输入边长,输入cylinder表示圆柱体对象,后面是底圆半径、高。

输出格式:
分别输出所有容器对象的表面积之和、体积之和,结果保留小数点后2位。

输入样例:
在这里给出一组输入。例如:

4
cube
15.7
cylinder
23.5 100
cube
46.8
cylinder
17.5 200
输出样例:
在这里给出相应的输出。例如:

56771.13
472290.12

代码:

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner i=new Scanner(System.in);
        int n=i.nextInt();
        Container c[]=new Container[n];
        String name=null;
        for(int a=0;a<n;a++){
            name=i.next();
            if(name.equals("cube")){
                c[a]=new Cube(i.nextDouble());
            }
            else if(name.equals("cylinder")){
                c[a]=new Cylinder(i.nextDouble(),i.nextDouble());
            }
        }
        System.out.println(String.format("%.2f",Container.sumofArea(c)));
        System.out.println(String.format("%.2f",Container.sumofVolume(c)));
    }
}

interface Container{
    public static final double pi=3.1415926;
    public abstract double area();
    public abstract double volume();
    static double sumofArea(Container c[]){
        double sum=0;
        for(int b=0;b<c.length;b++){
            sum+=c[b].area();
        }
        return sum;
    }
    static double sumofVolume(Container c[]){
        double sum=0;
        for(int d=0;d<c.length;d++){
            sum+=c[d].volume();
        }
        return sum;
    }
}

class Cube implements Container{
    double e;
    Cube(double e){
        this.e=e;
    }
    public double area(){
        return e*e*6;
    }
    public double volume(){
        return e*e*e;
    }
}

class Cylinder implements Container{
    double R;
    double h;
    Cylinder(double R,double h){
        this.R=R;
        this.h=h;
    }
    public double area(){
        return 2*(pi*R*R)+(2*pi*R*h);
    }
    public double volume(){
        return pi*R*R*h;
    }
}
View Code

类图:

 

 小结:代码部分没有遇到什么问题,刚开始的时候没有注意到已经给定了pi的值,用了Math.PI,答案错误,重新进行了审题并改正。因为要计算综合,本来是想直接加在一起,突然发现不确定容器的数量,所以用Container类定义了一个动态数组对象,用来储存输入值,用循环进行总和的计算。生成类图的时候只有两个框框,因为Cube和Cylinder均实现自Container接口。

PTA7

1 、电信计费系列2-手机+座机计费

 

实现南昌市电信分公司的计费程序,假设该公司针对手机和座机用户分别采取了两种计费方案,分别如下:
1、针对市内座机用户采用的计费方式(与电信计费系列1内容相同):
月租20元,接电话免费,市内拨打电话0.1元/分钟,省内长途0.3元/分钟,国内长途拨打0.6元/分钟。不足一分钟按一分钟计。
假设本市的区号:0791,江西省内各地市区号包括:0790~0799以及0701。
2、针对手机用户采用实时计费方式:
月租15元,市内省内接电话均免费,市内拨打市内电话0.1元/分钟,市内拨打省内电话0.2元/分钟,市内拨打省外电话0.3元/分钟,省内漫游打电话0.3元/分钟,省外漫游接听0.3元/分钟,省外漫游拨打0.6元/分钟;
注:被叫电话属于市内、省内还是国内由被叫电话的接听地点区号决定,比如以下案例中,南昌市手机用户13307912264在区号为020的广州接听了电话,主叫号码应被计算为拨打了一个省外长途,同时,手机用户13307912264也要被计算省外接听漫游费:
u-13307912264 1
t-079186330022 13307912264 020 2022.1.3 10:00:25 2022.1.3 10:05:11

输入:
输入信息包括两种类型
1、逐行输入南昌市用户开户的信息,每行一个用户,含手机和座机用户
格式:u-号码 计费类型 (计费类型包括:0-座机 1-手机实时计费 2-手机A套餐)
例如:u-079186300001 0
座机号码由区号和电话号码拼接而成,电话号码包含7-8位数字,区号最高位是0。
手机号码由11位数字构成,最高位是1。
本题在电信计费系列1基础上增加类型1-手机实时计费。
手机设置0或者座机设置成1,此种错误可不做判断。
2、逐行输入本月某些用户的通讯信息,通讯信息格式:
座机呼叫座机:t-主叫号码 接听号码 起始时间 结束时间
t-079186330022 058686330022 2022.1.3 10:00:25 2022.1.3 10:05:11
以上四项内容之间以一个英文空格分隔,
时间必须符合"yyyy.MM.dd HH:mm:ss"格式。提示:使用SimpleDateFormat类。
输入格式增加手机接打电话以及收发短信的格式,手机接打电话的信息除了号码之外需要额外记录拨打/接听的地点的区号,比如:
座机打手机:
t-主叫号码 接听号码 接听地点区号 起始时间 结束时间
t-079186330022 13305862264 020 2022.1.3 10:00:25 2022.1.3 10:05:11
手机互打:
t-主叫号码 拨号地点 接听号码 接听地点区号 起始时间 结束时间
t-18907910010 0791 13305862264 0371 2022.1.3 10:00:25 2022.1.3 10:05:11

注意:以上两类信息,先输入所有开户信息,再输入所有通讯信息,最后一行以“end”结束。

输出:
根据输入的详细通讯信息,计算所有已开户的用户的当月费用(精确到小数点后2位,单位元)。假设每个用户初始余额是100元。
每条通讯、短信信息均单独计费后累加,不是将所有信息累计后统一计费。
格式:号码+英文空格符+总的话费+英文空格符+余额
每个用户一行,用户之间按号码字符从小到大排序。
错误处理:
输入数据中出现的不符合格式要求的行一律忽略。

本题只做格式的错误判断,无需做内容上不合理的判断,比如同一个电话两条通讯记录的时间有重合、开户号码非南昌市的号码等,此类情况都当成正确的输入计算。但时间的输入必须符合要求,比如不能输入2022.13.61 28:72:65。
建议类图:
参见图1、2、3:

 

 


图1

图1中User是用户类,包括属性:
userRecords (用户记录)、balance(余额)、chargeMode(计费方式)、number(号码)。
ChargeMode是计费方式的抽象类:
chargeRules是计费方式所包含的各种计费规则的集合,ChargeRule类的定义见图3。
getMonthlyRent()方法用于返回月租(monthlyRent)。
UserRecords是用户记录类,保存用户各种通话、短信的记录,
各种计费规则将使用其中的部分或者全部记录。
其属性从上到下依次是:
市内拨打电话、省内(不含市内)拨打电话、省外拨打电话、
市内接听电话、省内(不含市内)接听电话、省外接听电话的记录
以及发送短信、接收短信的记录。

 

 


图2

图2中CommunicationRecord是抽象的通讯记录类:
包含callingNumber拨打号码、answerNumber接听号码两个属性。
CallRecord(通话记录)、MessageRecord(短信记录)是它的子类。CallRecord(通话记录类)包含属性:
通话的起始、结束时间以及
拨号地点的区号(callingAddressAreaCode)、接听地点的区号(answerAddressAreaCode)。
区号用于记录在哪个地点拨打和接听的电话。座机无法移动,就是本机区号,如果是手机号,则会有差异。

 

 

图3

图3是计费规则的相关类,这些类的核心方法是:
calCost(ArrayList<CallRecord> callRecords)。
该方法针根据输入参数callRecords中的所有记录计算某用户的某一项费用;如市话费。
输入参数callRecords的约束条件:必须是某一个用户的符合计费规则要求的所有记录。
SendMessageRule是发送短信的计费规则类,用于计算发送短信的费用。
LandPhoneInCityRule、LandPhoneInProvinceRule、LandPhoneInLandRule三个类分别是座机拨打市内、省内、省外电话的计费规则类,用于实现这三种情况的费用计算。
(提示:可以从UserRecords类中获取各种类型的callRecords)。
注意:以上图中所定义的类不是限定要求,根据实际需要自行补充或修改。

输入样例:
在这里给出一组输入。例如:

u-13811111111 1
t-13811111111 0791 13811111110 020 2022.1.3 08:00:00 2022.1.3 08:09:20
end
输出样例:
在这里给出相应的输出。例如:

13811111111 3.0 82.0

代码:

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.text.ParseException;
 
public class Main{
 
    public static void main(String[] args) {
 
        Outputtool outputtool = new Outputtool();
 
        Inputdeal inputdeal = new Inputdeal();
 
        ArrayList<User> users = new ArrayList<>();
 
        Scanner in = new Scanner(System.in);
 
        String input = in.nextLine();
 
        while (!input.equals("end")) {
            if (1 == inputdeal.check(input)) {
                inputdeal.writeUser(users, input);
            } else if (2 == inputdeal.check(input)) {
                inputdeal.writeRecord(users, input);
            }
            input = in.nextLine();
        }
 
        users.sort(new Comparator<User>() {
 
            @Override
            public int compare(User u1, User u2) {
                if (u1.getNumber().charAt(0) == '0' && u2.getNumber().charAt(0) != '0') {
                    return -1;
                } else if (u1.getNumber().charAt(0) != '0' && u2.getNumber().charAt(0) == '0') {
                    return 1;
                }
                if (Double.parseDouble(u1.getNumber()) > Double.parseDouble(u2.getNumber())) {
                    return 1;
                } else {
                    return -1;
                }
            }
        });
 
        for (User u : users) {
            System.out.print(u.getNumber() + " ");
            outputtool.output(u.calCost());
            System.out.print(" ");
            outputtool.output(u.calBalance());
            System.out.println();
 
        }
 
    }
 
}
 
abstract class ChargeMode {
    protected ArrayList<ChargeRule> chargeRules = new ArrayList<>();
 
    public abstract double calCost(UserRecords userRecords);
 
    public abstract double getMonthlyRent();
 
    public ArrayList<ChargeRule> getChargeRules() {
        return chargeRules;
    }
 
    public void setChargeRules(ArrayList<ChargeRule> chargeRules) {
        this.chargeRules = chargeRules;
    }
}
 
class UserRecords {
 
    private ArrayList<CallRecord> callingInCityRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> callingInProvinceRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> callingInLandRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInCityRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInProvinceRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInLandRecords = new ArrayList<CallRecord>();
    private ArrayList<MessageRecord> sendMessageRecords = new ArrayList<MessageRecord>();
    private ArrayList<MessageRecord> receiveMessageRecords = new ArrayList<MessageRecord>();
 
    public void addCallingInCityRecords(CallRecord callRecord) {
        callingInCityRecords.add(callRecord);
    }
 
    public void addCallingInProvinceRecords(CallRecord callRecord) {
        callingInProvinceRecords.add(callRecord);
    }
 
    public void addCallingInLandRecords(CallRecord callRecord) {
        callingInLandRecords.add(callRecord);
    }
 
    public void addAnswerInCityRecords(CallRecord callRecord) {
        answerInCityRecords.add(callRecord);
    }
 
    public void aaddAnswerInProvinceRecords(CallRecord callRecord) {
        answerInProvinceRecords.add(callRecord);
    }
 
    public void addAnswerInLandRecords(CallRecord callRecord) {
        answerInLandRecords.add(callRecord);
    }
 
    public void addSendMessageRecords(MessageRecord callRecord) {
        sendMessageRecords.add(callRecord);
    }
 
    public void addReceiveMessageRecords(MessageRecord callRecord) {
        receiveMessageRecords.add(callRecord);
    }
 
    public ArrayList<CallRecord> getCallingInCityRecords() {
        return callingInCityRecords;
    }
 
    public void setCallingInCityRecords(ArrayList<CallRecord> callingInCityRecords) {
        this.callingInCityRecords = callingInCityRecords;
    }
 
    public ArrayList<CallRecord> getCallingInProvinceRecords() {
        return callingInProvinceRecords;
    }
 
    public void setCallingInProvinceRecords(ArrayList<CallRecord> callingInProvinceRecords) {
        this.callingInProvinceRecords = callingInProvinceRecords;
    }
 
    public ArrayList<CallRecord> getCallingInLandRecords() {
        return callingInLandRecords;
    }
 
    public void setCallingInLandRecords(ArrayList<CallRecord> callingInLandRecords) {
        this.callingInLandRecords = callingInLandRecords;
    }
 
    public ArrayList<CallRecord> getAnswerInCityRecords() {
        return answerInCityRecords;
    }
 
    public void setAnswerInCityRecords(ArrayList<CallRecord> answerInCityRecords) {
        this.answerInCityRecords = answerInCityRecords;
    }
 
    public ArrayList<CallRecord> getAnswerInProvinceRecords() {
        return answerInProvinceRecords;
    }
 
    public void setAnswerInProvinceRecords(ArrayList<CallRecord> answerInProvinceRecords) {
        this.answerInProvinceRecords = answerInProvinceRecords;
    }
 
    public ArrayList<CallRecord> getAnswerInLandRecords() {
        return answerInLandRecords;
    }
 
    public void setAnswerInLandRecords(ArrayList<CallRecord> answerInLandRecords) {
        this.answerInLandRecords = answerInLandRecords;
    }
 
    public ArrayList<MessageRecord> getSendMessageRecords() {
        return sendMessageRecords;
    }
 
    public void setSendMessageRecords(ArrayList<MessageRecord> sendMessageRecords) {
        this.sendMessageRecords = sendMessageRecords;
    }
 
    public ArrayList<MessageRecord> getReceiveMessageRecords() {
        return receiveMessageRecords;
    }
 
    public void setReceiveMessageRecords(ArrayList<MessageRecord> receiveMessageRecords) {
        this.receiveMessageRecords = receiveMessageRecords;
    }
 
}
 
class LandlinePhoneCharging extends ChargeMode {
 
    private double monthlyRent = 20;
 
    public LandlinePhoneCharging() {
        super();
        chargeRules.add(new LandPhoneInCityRule());
        chargeRules.add(new LandPhoneInProvinceRule());
        chargeRules.add(new LandPhoneInlandRule());
    }
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (ChargeRule rule : chargeRules) {
            sumCost += rule.calCost(userRecords);
        }
        return sumCost;
    }
 
    @Override
    public double getMonthlyRent() {
        return monthlyRent;
    }
 
}
 
class MobilePhoneCharging extends ChargeMode {
 
    private double monthlyRent = 15;
 
    public MobilePhoneCharging() {
        super();
        chargeRules.add(new MobilePhoneInCityRule());
        chargeRules.add(new MobilePhoneInProvinceRule());
        chargeRules.add(new MobilePhoneInlandRule());
    }
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (ChargeRule rule : chargeRules) {
            sumCost += rule.calCost(userRecords);
        }
        return sumCost;
    }
 
    @Override
    public double getMonthlyRent() {
        return monthlyRent;
    }
 
}
 
class Inputdeal {
 
    public int check(String input) {
        if (input.matches("[u]-0791[0-9]{7,8}\\s[0]") || input.matches("[u]-1[0-9]{10}\\s[1]")) {
            return 1;
//        } else if (input.charAt(0) == 'm') {
//            return 2;
        } else if (input.matches("(([t]-0791[0-9]{7,8}\\s" + "0[0-9]{9,11}\\s)|" 
                + "([t]-0791[0-9]{7,8}\\s" + "1[0-9]{10}\\s" + "0[0-9]{2,3}\\s)|" 
                + "([t]-1[0-9]{10}\\s" + "0[0-9]{2,3}\\s" + "0[0-9]{9,11}\\s)|" 
                + "([t]-1[0-9]{10}\\s" + "0[0-9]{2,3}\\s" + "1[0-9]{10}\\s" + "0[0-9]{2,3}\\s))"
                
                + "((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.(((0?[13578]|1[02])\\.(0?"
                + "[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((("
                + "[0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))"
                + "\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s"
                + "((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.("
                + "[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((("
                + "[0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))"
                + "\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])")) {
            return 2;
        }
        return 0;
    }
 
    @SuppressWarnings("unused")
    private boolean validatet(String string) {
        if (!string.matches("^([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])$")) {
            return false;
        }
        return true;
    }
 
    public static boolean validate(String dateString) {
        // 使用正则表达式 测试 字符 符合 dddd.dd.dd 的格式(d表示数字)
        Pattern p = Pattern.compile("\\d{4}+[\\.]\\d{1,2}+[\\.]\\d{1,2}+");
        Matcher m = p.matcher(dateString);
        if (!m.matches()) {
            return false;
        }
 
        // 得到年月日
        String[] array = dateString.split("\\.");
        int year = Integer.valueOf(array[0]);
        int month = Integer.valueOf(array[1]);
        int day = Integer.valueOf(array[2]);
 
        if (month < 1 || month > 12) {
            return false;
        }
        int[] monthLengths = new int[] { 0, 31, -1, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
        if (isLeapYear(year)) {
            monthLengths[2] = 29;
        } else {
            monthLengths[2] = 28;
        }
        int monthLength = monthLengths[month];
        if (day < 1 || day > monthLength) {
            return false;
        }
        return true;
    }
 
    /** 是否是闰年 */
    private static boolean isLeapYear(int year) {
        return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0);
    }
 
    public boolean judge(String input) {
 
        return false;
    }
 
    public void writeUser(ArrayList<User> users, String input) {
        User usernew = new User();
        String[] inputs = input.split(" ");
        String num = inputs[0].substring(2);
        for (User i : users) {
            if (i.getNumber().equals(num)) {
                return;
            }
        }
        usernew.setNumber(num);
        int mode = Integer.parseInt(inputs[1]);
        if (mode == 0) {
            usernew.setChargeMode(new LandlinePhoneCharging());
        } else if (mode == 1) {
            usernew.setChargeMode(new MobilePhoneCharging());
        }
        users.add(usernew);
    }
 
    public void writeRecord(ArrayList<User> users, String input) {
        String[] inputs = input.split(" ");
 
        User callu = null, answeru = null;
        CallRecord callrecord = new CallRecord(inputs);
 
        if (input.charAt(0) == 't') {
            String out = inputs[0];
            String in = "";
            if (inputs.length == 6) {
                in = inputs[1];
            } else if (inputs.length == 7) {
                in = inputs[1];
            } else if (inputs.length == 8) {
                in = inputs[2];
            }
 
            for (User i : users) {
                if (i.getNumber().equals(out)) {
                    callu = i;
                }
                if (i.getNumber().equals(in)) {
                    answeru = i;
                }
                if (callu != null && answeru != null) {
                    break;
                }
            }
 
            if (callu != null) {
                if (callrecord.getCallType().matches("^1[1-3]$")) {
                    callu.getUserRecords().addCallingInCityRecords(callrecord);
                } else if (callrecord.getCallType().matches("^2[1-3]$")) {
                    callu.getUserRecords().addCallingInProvinceRecords(callrecord);
                } else {
                    callu.getUserRecords().addCallingInLandRecords(callrecord);
                }
            }
 
            if (answeru != null) {
                if (callrecord.getCallType().matches("^[1-3]1$")) {
                    answeru.getUserRecords().addAnswerInCityRecords(callrecord);
                } else if (callrecord.getCallType().matches("^[1-3]2$")) {
                    answeru.getUserRecords().aaddAnswerInProvinceRecords(callrecord);
                } else {
                    answeru.getUserRecords().addAnswerInLandRecords(callrecord);
                }
            }
        } else if (input.charAt(0) == 'm') {
 
        }
 
    }
 
}
 
abstract class CommunicationRecord {
    protected String callingNumber;
    protected String answerNumbe;
 
    public String getCallingNumber() {
        return callingNumber;
    }
 
    public void setCallingNumber(String callingNumber) {
        this.callingNumber = callingNumber;
    }
 
    public String getAnswerNumbe() {
        return answerNumbe;
    }
 
    public void setAnswerNumbe(String answerNumbe) {
        this.answerNumbe = answerNumbe;
    }
 
}
 
abstract class ChargeRule {
 
    abstract public double calCost(UserRecords userRecords);
 
}
 
class CallRecord extends CommunicationRecord {
    private Date startTime;
    private Date endTime;
    private String callingAddressAreaCode;
    private String answerAddressAreaCode;
 
    public String getCallType() {
        String type = "";
        if (callingAddressAreaCode.equals("0791")) {
            type = type.concat("1");
        } else if (callingAddressAreaCode.matches("^079[023456789]$") || callingAddressAreaCode.equals("0701")) {
            type = type.concat("2");
        } else {
            type = type.concat("3");
        }
 
        if (answerAddressAreaCode.equals("0791")) {
            type = type.concat("1");
        } else if (answerAddressAreaCode.matches("^079[023456789]$") || answerAddressAreaCode.equals("0701")) {
            type = type.concat("2");
        } else {
            type = type.concat("3");
        }
 
        return type;
    }
 
    public CallRecord(String[] inputs) {
        super();
 
        char type = inputs[0].charAt(0);
        inputs[0] = inputs[0].substring(2);
 
        String sd = null, st = null, ed = null, et = null;
 
        if (type == 't') {
            if (inputs.length == 6) {
                sd = inputs[2];
                st = inputs[3];
                ed = inputs[4];
                et = inputs[5];
                callingAddressAreaCode = inputs[0].substring(0, 4);
                answerAddressAreaCode = inputs[1].substring(0, 4);
            } else if (inputs.length == 7) {
                sd = inputs[3];
                st = inputs[4];
                ed = inputs[5];
                et = inputs[6];
                if (inputs[0].charAt(0) != '0') {
                    if (inputs[2].length() == 10) {
                        answerAddressAreaCode = inputs[2].substring(0, 3);
                    } else {
                        answerAddressAreaCode = inputs[2].substring(0, 4);
                    }
                    callingAddressAreaCode = inputs[1];
                } else {
                    if (inputs[0].length() == 10) {
                        callingAddressAreaCode = inputs[0].substring(0, 3);
                    } else {
                        callingAddressAreaCode = inputs[0].substring(0, 4);
                    }
                    answerAddressAreaCode = inputs[2];
                }
            } else if (inputs.length == 8) {
                sd = inputs[4];
                st = inputs[5];
                ed = inputs[6];
                et = inputs[7];
                callingAddressAreaCode = inputs[1];
                answerAddressAreaCode = inputs[3];
            }
        } else if (type == 'm') {
 
        }
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss", Locale.getDefault());
        try {
            startTime = simpleDateFormat.parse(sd + " " + st);
            endTime = simpleDateFormat.parse(ed + " " + et);
        } catch (ParseException e) {
        }
 
    }
 
    public CallRecord(Date startTime, Date endTime, String callingAddressAreaCode, String answerAddressAreaCode) {
        super();
        this.startTime = startTime;
        this.endTime = endTime;
        this.callingAddressAreaCode = callingAddressAreaCode;
        this.answerAddressAreaCode = answerAddressAreaCode;
    }
 
    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;
    }
 
    public String getCallingAddressAreaCode() {
        return callingAddressAreaCode;
    }
 
    public void setCallingAddressAreaCode(String callingAddressAreaCode) {
        this.callingAddressAreaCode = callingAddressAreaCode;
    }
 
    public String getAnswerAddressAreaCode() {
        return answerAddressAreaCode;
    }
 
    public void setAnswerAddressAreaCode(String answerAddressAreaCode) {
        this.answerAddressAreaCode = answerAddressAreaCode;
    }
}
 
abstract class CallChargeRule extends ChargeRule {
 
}
 
class LandPhoneInCityRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInCityRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("11")) {
                sumCost += distanceM * 0.1;
            } else if (call.getCallType().equals("12")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("13")) {
                sumCost += distanceM * 0.6;
            }
        }
        return sumCost;
    }
 
}
 
class LandPhoneInlandRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.6;
        }
        return sumCost;
    }
 
}
 
class LandPhoneInProvinceRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInProvinceRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.3;
        }
        return sumCost;
    }
 
}
 
class MobilePhoneInCityRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInCityRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("11")) {
                sumCost += distanceM * 0.1;
            } else if (call.getCallType().equals("12")) {
                sumCost += distanceM * 0.2;
            } else if (call.getCallType().equals("13")) {
                sumCost += distanceM * 0.3;
            }
 
        }
        return sumCost;
    }
 
}
 
class MobilePhoneInlandRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.6;
        }
        for (CallRecord call : userRecords.getAnswerInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.3;
        }
        return sumCost;
    }
 
}
 
class MobilePhoneInProvinceRule extends CallChargeRule {
 
    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInProvinceRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("21")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("22")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("23")) {
                sumCost += distanceM * 0.3;
            }
        }
        return sumCost;
    }
 
}
 
class MessageRecord extends CommunicationRecord {
 
    private String message;
 
    public String getMessage() {
        return message;
    }
 
    public void setMessage(String message) {
        this.message = message;
    }
}
 
class User {
 
    private UserRecords userRecords = new UserRecords();
    private double balance = 100;
    private ChargeMode chargeMode;
    private String number;
 
    public double calCost() {
        return chargeMode.calCost(userRecords);
    }
 
    public double calBalance() {
        return balance - chargeMode.getMonthlyRent() - chargeMode.calCost(userRecords);
    }
 
    public UserRecords getUserRecords() {
        return userRecords;
    }
 
    public void setUserRecords(UserRecords userRecords) {
        this.userRecords = userRecords;
    }
 
    public ChargeMode getChargeMode() {
        return chargeMode;
    }
 
    public void setChargeMode(ChargeMode chargeMode) {
        this.chargeMode = chargeMode;
    }
 
    public String getNumber() {
        return number;
    }
 
    public void setNumber(String number) {
        this.number = number;
    }
 
}
 
class Outputtool {
 
    @SuppressWarnings("deprecation")
    public void output(double out) {
        BigDecimal numb = new BigDecimal(out);
        out = numb.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
        System.out.print(out);
    }
}
View Code

类图:

 

 

 

 小结:本题总体来说和上次习题的第一题相差不多,但是增加了功能,因为隔着的时间比较长,所以重温代码还是花费了不少时间的。难度与之前持平,但是写起来的时候更熟练了一些。

2 、sdut-Collection-sort--C~K的班级(II)

经过不懈的努力,C~K终于当上了班主任。

现在他要统计班里学生的名单,但是C~K在教务系统中导出班级名单时出了问题,发现会有同学的信息重复,现在他想把重复的同学信息删掉,只保留一个,
但是工作量太大了,所以找到了会编程的你,你能帮他解决这个问题吗?

输入格式:
第一行输入一个N,代表C~K导出的名单共有N行(N<100000).

接下来的N行,每一行包括一个同学的信息,学号 姓名 年龄 性别。

输出格式:
第一行输出一个n,代表删除重复名字后C~K的班级共有几人。

接下来的n行,输出每一个同学的信息,输出按照学号从小到大的顺序。

输入样例:
6
0001 MeiK 20 M
0001 MeiK 20 M
0002 sdk2 21 M
0002 sdk2 21 M
0002 sdk2 21 M
0000 blf2 22 F
输出样例:
3
0000 blf2 22 F
0001 MeiK 20 M
0002 sdk2 21 M

代码:

 

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Scanner;
import java.util.Set;

public class Main{
    String name;
    String num;
    int age;
    char sex;
    Main(String num,String name,int age,char sex){
        this.name=name;
        this.num=num;
        this.age=age;
        this.sex=sex;
    }
    public String toString(){
        return num+" "+name+" "+age+" "+sex;
    }
    public static void main(String[] args){
        Scanner i=new Scanner(System.in);
        HashMap<String,Main> a=new HashMap<String,Main>();
        int n=i.nextInt();
        for(int b=0;b<n;b++){
            Main s=new Main(i.next(),i.next(),i.nextInt(),i.next().charAt(0));
            a.put(s.num,s);
        }
        Set<String> c=a.keySet();
        ArrayList<String>list=new ArrayList<String>(c);
        Collections.sort(list);
        System.out.println(list.size());
        for(String b:list){
            System.out.println(a.get(b));
        }
        i.close();
    }
}
View Code

 

类图:

 

 小结:将学生的信息转化为了字符串,通过比较字符串是否相同来删除重复学生信息。

3 、阅读程序,按照题目需求修改程序

功能需求:

使用集合存储3个员工的信息(有序);
通过迭代器依次找出所有的员工。
提示:学生复制以下代码到编程区,并按需求进行调试修改。

// 1、导入相关包

//定义员工类
class Employee {

private String name;
private int age;

public Employee() {
super();
}

public Employee(String name, int age) {
super();
this.name = name;
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}
}

//主函数
public class Main {

public static void main(String[] args) {
// 1、创建有序集合对象
Collection c ;

// 创建3个员工元素对象
for (int i = 0; i < 3; i++) {
Scanner sc = new Scanner(System.in);
String employeeName = sc.nextLine();
int employeeAge = sc.nextInt();

Employee employee = new Employee(employeeName, employeeAge);
c.add(employee);
}
// 2、创建迭代器遍历集合
Iterator it;
//3、遍历
while (it.hasnext) {
//4、集合中对象未知,向下转型
Employee e = it.next();
System.out.println(e.getName() + "---" + e.getAge());
}
}

}
输入样例:
在这里给出一组输入。例如:

zs
10
ls
20
ww
30
输出样例:
在这里给出相应的输出。例如:

zs---10
ls---20
ww---30

代码:

 

import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

class Employee {

    private String name;
    private int age;

    public Employee() {
        super();
    }

    public Employee(String name, int age) {
        super();
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

//主函数
public class Main {

    public static void main(String[] args) {
                // 1、创建有序集合对象
        ArrayList<Employee> c=new ArrayList<Employee>();

      // 创建3个员工元素对象
        for (int i = 0; i < 3; i++) {
            Scanner sc = new Scanner(System.in);
            String employeeName = sc.nextLine();
            int employeeAge = sc.nextInt();
            
            Employee employee = new Employee(employeeName, employeeAge);
            c.add(employee);
        }            
                
                
                
                // 2、创建迭代器遍历集合
                Iterator it=c.iterator();
                
                //3、遍历
                while (it.hasNext()) {
                    
                    //4、集合中对象未知,向下转型
                    Employee e =(Employee)it.next();
                    
                    System.out.println(e.getName() + "---" + e.getAge());
                }
    }

}
View Code

 

 

小结:从类图中可以看出,本次实验并不复杂,并且题目中已经给出了代码主体,进行修改与补充即可。

PTA8

1 、电信计费系列3-短信计费

实现一个简单的电信计费程序,针对手机的短信采用如下计费方式:
1、接收短信免费,发送短信0.1元/条,超过3条0.2元/条,超过5条0.3元/条。
2、如果一次发送短信的字符数量超过10个,按每10个字符一条短信进行计算。

输入:
输入信息包括两种类型
1、逐行输入南昌市手机用户开户的信息,每行一个用户。
格式:u-号码 计费类型 (计费类型包括:0-座机 1-手机实时计费 2-手机A套餐 3-手机短信计费)
例如:u-13305862264 3
座机号码由区号和电话号码拼接而成,电话号码包含7-8位数字,区号最高位是0。
手机号码由11位数字构成,最高位是1。
本题只针对类型3-手机短信计费。
2、逐行输入本月某些用户的短信信息,短信的格式:
m-主叫号码,接收号码,短信内容 (短信内容只能由数字、字母、空格、英文逗号、英文句号组成)
m-18907910010 13305862264 welcome to jiangxi.
m-13305862264 18907910010 thank you.

注意:以上两类信息,先输入所有开户信息,再输入所有通讯信息,最后一行以“end”结束。
输出:
根据输入的详细短信信息,计算所有已开户的用户的当月短信费用(精确到小数点后2位,单位元)。假设每个用户初始余额是100元。
每条短信信息均单独计费后累加,不是将所有信息累计后统一计费。
格式:号码+英文空格符+总的话费+英文空格符+余额
每个用户一行,用户之间按号码字符从小到大排序。
错误处理:
输入数据中出现的不符合格式要求的行一律忽略。
本题只做格式的错误判断,无需做内容上不合理的判断,比如同一个电话两条通讯记录的时间有重合、开户号码非南昌市的号码、自己给自己打电话等,此类情况都当成正确的输入计算。但时间的输入必须符合要求,比如不能输入2022.13.61 28:72:65。

本题只考虑短信计费,不考虑通信费用以及月租费。

建议类图:
参见图1、2、3:

 

 

 

图1

图1中User是用户类,包括属性:
userRecords (用户记录)、balance(余额)、chargeMode(计费方式)、number(号码)。
ChargeMode是计费方式的抽象类:
chargeRules是计费方式所包含的各种计费规则的集合,ChargeRule类的定义见图3。
getMonthlyRent()方法用于返回月租(monthlyRent)。
UserRecords是用户记录类,保存用户各种通话、短信的记录,
各种计费规则将使用其中的部分或者全部记录。
其属性从上到下依次是:
市内拨打电话、省内(不含市内)拨打电话、省外拨打电话、
市内接听电话、省内(不含市内)接听电话、省外接听电话的记录
以及发送短信、接收短信的记录。

 

 


图2

图2中CommunicationRecord是抽象的通讯记录类:
包含callingNumber拨打号码、answerNumber接听号码两个属性。
CallRecord(通话记录)、MessageRecord(短信记录)是它的子类。

 

 


图3
图3是计费规则的相关类,这些类的核心方法是:
calCost(ArrayList callRecords)。
该方法针根据输入参数callRecords中的所有记录计算某用户的某一项费用;如市话费。
输入参数callRecords的约束条件:必须是某一个用户的符合计费规则要求的所有记录。
SendMessageRule是发送短信的计费规则类,用于计算发送短信的费用。
LandPhoneInCityRule、LandPhoneInProvinceRule、LandPhoneInLandRule三个类分别是座机拨打市内、省内、省外电话的计费规则类,用于实现这三种情况的费用计算。

(提示:可以从UserRecords类中获取各种类型的callRecords)。
注意:以上图中所定义的类不是限定要求,根据实际需要自行补充或修改。

输入样例:
在这里给出一组输入。例如:

u-18907910010 3
m-18907910010 13305862264 aaaaaaaaaaaaaaaaaaaaaaa
end
输出样例:
在这里给出相应的输出。例如:

18907910010 0.3 99.7
### 输入样例1:
在这里给出一组输入。例如:

u-18907910010 3
m-18907910010 13305862264 aaaaaaaaaaaa
m-18907910010 13305862264 aaaaaaa.
m-18907910010 13305862264 bb,bbbb
end
输出样例1:
在这里给出相应的输出。例如:

18907910010 0.5 99.5

代码:

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.text.ParseException;

public class Main{
    public static void main(String[] args){
        Outputtool out=new Outputtool();
        Inputdeal inp=new Inputdeal();
        ArrayList<User> un=new ArrayList<User>();
        Scanner input=new Scanner(System.in);
        String s=input.nextLine();
        while(!s.equals("end")){
            if(inp.check(s)==1){
                inp.writeUser(un,s);
            }
            else if(inp.check(s)==2){
                inp.writeRecord(un,s);
            }
            s=input.nextLine();
        }
        un.sort(new Comparator<User>(){
            public int compare(User u1,User u2){
                if(u1.getNumber().charAt(0)=='0'&&u2.getNumber().charAt(0)!='0'){
                    return -1;
                }
                else if(u1.getNumber().charAt(0)!='0'&&u2.getNumber().charAt(0)=='0'){
                    return 1;
                }
                if(Double.parseDouble(u1.getNumber())>Double.parseDouble(u2.getNumber())){
                    return 1;
                }
                else{
                    return -1;
                }
            }
        });
        for(User u:un){
            System.out.print(u.getNumber()+" ");
            out.output(u.calCost());
            System.out.print(" ");
            out.output(u.calBalance());
            System.out.println();
        }
    }
}
abstract class ChargeMode {
    protected ArrayList<ChargeRule> chargeRules = new ArrayList<>();

    public abstract double calCost(UserRecords userRecords);

    public abstract double getMonthlyRent();

    public ArrayList<ChargeRule> getChargeRules() {
        return chargeRules;
    }

    public void setChargeRules(ArrayList<ChargeRule> chargeRules) {
        this.chargeRules = chargeRules;
    }
}

class UserRecords {

    private ArrayList<CallRecord> callingInCityRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> callingInProvinceRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> callingInLandRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInCityRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInProvinceRecords = new ArrayList<CallRecord>();
    private ArrayList<CallRecord> answerInLandRecords = new ArrayList<CallRecord>();
    private ArrayList<MessageRecord> sendMessageRecords = new ArrayList<MessageRecord>();
    private ArrayList<MessageRecord> receiveMessageRecords = new ArrayList<MessageRecord>();

    public void addCallingInCityRecords(CallRecord callRecord) {
        callingInCityRecords.add(callRecord);
    }

    public void addCallingInProvinceRecords(CallRecord callRecord) {
        callingInProvinceRecords.add(callRecord);
    }

    public void addCallingInLandRecords(CallRecord callRecord) {
        callingInLandRecords.add(callRecord);
    }

    public void addAnswerInCityRecords(CallRecord callRecord) {
        answerInCityRecords.add(callRecord);
    }

    public void aaddAnswerInProvinceRecords(CallRecord callRecord) {
        answerInProvinceRecords.add(callRecord);
    }

    public void addAnswerInLandRecords(CallRecord callRecord) {
        answerInLandRecords.add(callRecord);
    }

    public void addSendMessageRecords(MessageRecord callRecord) {
        sendMessageRecords.add(callRecord);
    }

    public void addReceiveMessageRecords(MessageRecord callRecord) {
        receiveMessageRecords.add(callRecord);
    }

    public ArrayList<CallRecord> getCallingInCityRecords() {
        return callingInCityRecords;
    }

    public void setCallingInCityRecords(ArrayList<CallRecord> callingInCityRecords) {
        this.callingInCityRecords = callingInCityRecords;
    }

    public ArrayList<CallRecord> getCallingInProvinceRecords() {
        return callingInProvinceRecords;
    }

    public void setCallingInProvinceRecords(ArrayList<CallRecord> callingInProvinceRecords) {
        this.callingInProvinceRecords = callingInProvinceRecords;
    }

    public ArrayList<CallRecord> getCallingInLandRecords() {
        return callingInLandRecords;
    }

    public void setCallingInLandRecords(ArrayList<CallRecord> callingInLandRecords) {
        this.callingInLandRecords = callingInLandRecords;
    }

    public ArrayList<CallRecord> getAnswerInCityRecords() {
        return answerInCityRecords;
    }

    public void setAnswerInCityRecords(ArrayList<CallRecord> answerInCityRecords) {
        this.answerInCityRecords = answerInCityRecords;
    }

    public ArrayList<CallRecord> getAnswerInProvinceRecords() {
        return answerInProvinceRecords;
    }

    public void setAnswerInProvinceRecords(ArrayList<CallRecord> answerInProvinceRecords) {
        this.answerInProvinceRecords = answerInProvinceRecords;
    }

    public ArrayList<CallRecord> getAnswerInLandRecords() {
        return answerInLandRecords;
    }

    public void setAnswerInLandRecords(ArrayList<CallRecord> answerInLandRecords) {
        this.answerInLandRecords = answerInLandRecords;
    }

    public ArrayList<MessageRecord> getSendMessageRecords() {
        return sendMessageRecords;
    }

    public void setSendMessageRecords(ArrayList<MessageRecord> sendMessageRecords) {
        this.sendMessageRecords = sendMessageRecords;
    }

    public ArrayList<MessageRecord> getReceiveMessageRecords() {
        return receiveMessageRecords;
    }

    public void setReceiveMessageRecords(ArrayList<MessageRecord> receiveMessageRecords) {
        this.receiveMessageRecords = receiveMessageRecords;
    }

}

class LandlinePhoneCharging extends ChargeMode {

    private double monthlyRent = 20;

    public LandlinePhoneCharging() {
        super();
        chargeRules.add(new LandPhoneInCityRule());
        chargeRules.add(new LandPhoneInProvinceRule());
        chargeRules.add(new LandPhoneInlandRule());
    }

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (ChargeRule rule : chargeRules) {
            sumCost += rule.calCost(userRecords);
        }
        return sumCost;
    }

    @Override
    public double getMonthlyRent() {
        return monthlyRent;
    }

}

class MobilePhoneCharging extends ChargeMode {

    private double monthlyRent = 15;

    public MobilePhoneCharging() {
        super();
        chargeRules.add(new MobilePhoneInCityRule());
        chargeRules.add(new MobilePhoneInProvinceRule());
        chargeRules.add(new MobilePhoneInlandRule());
    }

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (ChargeRule rule : chargeRules) {
            sumCost += rule.calCost(userRecords);
        }
        return sumCost;
    }

    @Override
    public double getMonthlyRent() {
        return monthlyRent;
    }

}

class MobilePhoneMassageCharging extends ChargeMode {

    private double monthlyRent = 0;

    public MobilePhoneMassageCharging() {
        super();
        chargeRules.add(new MobilePhoneMessageRule());
    }

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (ChargeRule rule : chargeRules) {
            sumCost += rule.calCost(userRecords);
        }
        return sumCost;
    }

    @Override
    public double getMonthlyRent() {
        return monthlyRent;
    }

}

class Inputdeal {

    public int check(String input) {
        if (input.matches("[u]-0791[0-9]{7,8}\\s[0]") || input.matches("[u]-1[0-9]{10}\\s[13]")) {
            return 1;
        } else if (input.matches("[m]-1[0-9]{10}\\s" + "1[0-9]{10}\\s" + "[0-9a-zA-Z\\s\\.,]+")) {
            return 2;
        }
        return 0;
    }

    public void writeUser(ArrayList<User> users, String input) {
        User usernew = new User();
        String[] inputs = input.split(" ");
        String num = inputs[0].substring(2);
        for (User i : users) {
            if (i.getNumber().equals(num)) {
                return;
            }
        }
        usernew.setNumber(num);
        int mode = Integer.parseInt(inputs[1]);
        if (mode == 0) {
            usernew.setChargeMode(new LandlinePhoneCharging());
        } else if (mode == 1) {
            usernew.setChargeMode(new MobilePhoneCharging());
        } else if (mode == 3) {
            usernew.setChargeMode(new MobilePhoneMassageCharging());
        }
        users.add(usernew);
    }

    public void writeRecord(ArrayList<User> users, String input) {
        String[] inputs = input.split(" ");
        inputs[0] = inputs[0].substring(2);

        User callu = null, answeru = null;

        String out = inputs[0];
        String in = "";
        if (inputs.length == 6) {
            in = inputs[1];
        } else if (inputs.length == 7) {
            in = inputs[1];
        } else if (inputs.length == 8) {
            in = inputs[2];
        } else {
            in = inputs[1];
        }

        for (User i : users) {
            if (i.getNumber().equals(out)) {
                callu = i;
            }
            if (i.getNumber().equals(in)) {
                answeru = i;
            }
            if (callu != null && answeru != null) {
                break;
            }
        }

        if (input.charAt(0) == 'm') {
            MessageRecord messageRecord = new MessageRecord(input);
            if (callu != null) {
                callu.getUserRecords().addSendMessageRecords(messageRecord);
                ;
            }
            if (answeru != null) {
                callu.getUserRecords().addReceiveMessageRecords(messageRecord);
            }
        }

    }

}

abstract class CommunicationRecord {
    protected String callingNumber;
    protected String answerNumbe;

    public String getCallingNumber() {
        return callingNumber;
    }

    public void setCallingNumber(String callingNumber) {
        this.callingNumber = callingNumber;
    }

    public String getAnswerNumbe() {
        return answerNumbe;
    }

    public void setAnswerNumbe(String answerNumbe) {
        this.answerNumbe = answerNumbe;
    }

}

abstract class ChargeRule {

    abstract public double calCost(UserRecords userRecords);

}

class CallRecord extends CommunicationRecord {
    private Date startTime;
    private Date endTime;
    private String callingAddressAreaCode;
    private String answerAddressAreaCode;

    public String getCallType() {
        String type = "";
        if (callingAddressAreaCode.equals("0791")) {
            type = type.concat("1");
        } else if (callingAddressAreaCode.matches("^079[023456789]$") || callingAddressAreaCode.equals("0701")) {
            type = type.concat("2");
        } else {
            type = type.concat("3");
        }

        if (answerAddressAreaCode.equals("0791")) {
            type = type.concat("1");
        } else if (answerAddressAreaCode.matches("^079[023456789]$") || answerAddressAreaCode.equals("0701")) {
            type = type.concat("2");
        } else {
            type = type.concat("3");
        }

        return type;
    }

    public CallRecord(String[] inputs) {
        super();

        char type = inputs[0].charAt(0);

        String sd = null, st = null, ed = null, et = null;

        if (type == 't') {
            if (inputs.length == 6) {
                sd = inputs[2];
                st = inputs[3];
                ed = inputs[4];
                et = inputs[5];
                callingAddressAreaCode = inputs[0].substring(0, 4);
                answerAddressAreaCode = inputs[1].substring(0, 4);
            } else if (inputs.length == 7) {
                sd = inputs[3];
                st = inputs[4];
                ed = inputs[5];
                et = inputs[6];
                if (inputs[0].charAt(0) != '0') {
                    if (inputs[2].length() == 10) {
                        answerAddressAreaCode = inputs[2].substring(0, 3);
                    } else {
                        answerAddressAreaCode = inputs[2].substring(0, 4);
                    }
                    callingAddressAreaCode = inputs[1];
                } else {
                    if (inputs[0].length() == 10) {
                        callingAddressAreaCode = inputs[0].substring(0, 3);
                    } else {
                        callingAddressAreaCode = inputs[0].substring(0, 4);
                    }
                    answerAddressAreaCode = inputs[2];
                }
            } else if (inputs.length == 8) {
                sd = inputs[4];
                st = inputs[5];
                ed = inputs[6];
                et = inputs[7];
                callingAddressAreaCode = inputs[1];
                answerAddressAreaCode = inputs[3];
            }
        } else if (type == 'm') {

        }
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss", Locale.getDefault());
        try {
            startTime = simpleDateFormat.parse(sd + " " + st);
            endTime = simpleDateFormat.parse(ed + " " + et);
        } catch (ParseException e) {
        }

    }

    public CallRecord(Date startTime, Date endTime, String callingAddressAreaCode, String answerAddressAreaCode) {
        super();
        this.startTime = startTime;
        this.endTime = endTime;
        this.callingAddressAreaCode = callingAddressAreaCode;
        this.answerAddressAreaCode = answerAddressAreaCode;
    }

    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;
    }

    public String getCallingAddressAreaCode() {
        return callingAddressAreaCode;
    }

    public void setCallingAddressAreaCode(String callingAddressAreaCode) {
        this.callingAddressAreaCode = callingAddressAreaCode;
    }

    public String getAnswerAddressAreaCode() {
        return answerAddressAreaCode;
    }

    public void setAnswerAddressAreaCode(String answerAddressAreaCode) {
        this.answerAddressAreaCode = answerAddressAreaCode;
    }
}

abstract class CallChargeRule extends ChargeRule {

}

class LandPhoneInCityRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInCityRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("11")) {
                sumCost += distanceM * 0.1;
            } else if (call.getCallType().equals("12")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("13")) {
                sumCost += distanceM * 0.6;
            }
        }
        return sumCost;
    }

}

class LandPhoneInlandRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.6;
        }
        return sumCost;
    }

}

class LandPhoneInProvinceRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInProvinceRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.3;
        }
        return sumCost;
    }

}

class MobilePhoneInCityRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInCityRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("11")) {
                sumCost += distanceM * 0.1;
            } else if (call.getCallType().equals("12")) {
                sumCost += distanceM * 0.2;
            } else if (call.getCallType().equals("13")) {
                sumCost += distanceM * 0.3;
            }

        }
        return sumCost;
    }

}

class MobilePhoneInlandRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.6;
        }
        for (CallRecord call : userRecords.getAnswerInLandRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            sumCost += distanceM * 0.3;
        }
        return sumCost;
    }

}

class MobilePhoneInProvinceRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        for (CallRecord call : userRecords.getCallingInProvinceRecords()) {
            double distanceS = (-call.getStartTime().getTime() + call.getEndTime().getTime()) / 1000;
            if (distanceS < 0) {
                continue;
            }
            double distanceM = (int) distanceS / 60;
            if (distanceS % 60 != 0) {
                distanceM += 1;
            }
            if (call.getCallType().equals("21")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("22")) {
                sumCost += distanceM * 0.3;
            } else if (call.getCallType().equals("23")) {
                sumCost += distanceM * 0.3;
            }
        }
        return sumCost;
    }

}

class MobilePhoneMessageRule extends CallChargeRule {

    @Override
    public double calCost(UserRecords userRecords) {
        double sumCost = 0;
        int number = 0;
        for (MessageRecord m : userRecords.getSendMessageRecords()) {
            int length = m.getMessage().length();
            if (length <= 10) {
                number++;
            } else {
                number += length / 10;
                if (length % 10 != 0) {
                    number++;
                }
            }
        }
        if (number <= 3) {
            sumCost = number * 0.1;
        } else if (number <= 5) {
            sumCost = 0.3 + 0.2 * (number - 3);
        } else {
            sumCost = 0.7 + 0.3 * (number - 5);
        }
        return sumCost;
    }

}

class MessageRecord extends CommunicationRecord {

    private String message;

    public MessageRecord(String input) {
        super();
        this.message = input.substring(26);
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

class User {

    private UserRecords userRecords = new UserRecords();
    private double balance = 100;
    private ChargeMode chargeMode;
    private String number;

    public double calCost() {
        return chargeMode.calCost(userRecords);
    }

    public double calBalance() {
        return balance - chargeMode.getMonthlyRent() - chargeMode.calCost(userRecords);
    }

    public UserRecords getUserRecords() {
        return userRecords;
    }

    public void setUserRecords(UserRecords userRecords) {
        this.userRecords = userRecords;
    }

    public ChargeMode getChargeMode() {
        return chargeMode;
    }

    public void setChargeMode(ChargeMode chargeMode) {
        this.chargeMode = chargeMode;
    }

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

}

class Outputtool {

    @SuppressWarnings("deprecation")
    public void output(double out) {
        BigDecimal numb = new BigDecimal(out);
        out = numb.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
        System.out.print(out);
    }
}

类图:

 

 

 

 

 

 

 

 小结:本次实验较为顺利,有了前两次的基础,熟悉各种规则后写代码会容易很多,大部分从前边进行粘贴就可以。写本次实验的时候偶尔前边的部分会报错,可以进行单元测试找到是哪部分出了问题,大多数时候都是因为变量问题,和前边代码产生冲突。

2 、编写一个类Shop(商店)、内部类InnerCoupons(内部购物券)

编写一个类Shop(商店),该类中有一个成员内部类InnerCoupons(内部购物券),可以用于购买该商店的牛奶(假设每箱牛奶售价为50元)。要求如下:
(1)Shop类中有私有属性milkCount(牛奶的箱数,int类型)、公有的成员方法setMilkCount( )和getMilkCount( )分别用于设置和获取牛奶的箱数。
(2)成员内部类InnerCoupons,有公有属性value(面值,int类型),一个带参数的构造方法可以设定购物券的面值value,一个公有的成员方法buy( )要求输出使用了面值为多少的购物券进行支付,同时使商店牛奶的箱数减少value/50。
(3)Shop类中还有成员变量coupons50(面值为50元的内部购物券,类型为InnerCoupons)、coupons100(面值为100元的内部购物券,类型为InnerCoupons)。
(4)在Shop类的构造方法中,调用内部类InnerCoupons的带参数的构造方法分别创建上面的购物券coupons50、coupons100。


在测试类Main中,创建一个Shop类的对象myshop,从键盘输入一个整数(大于或等于3),将其设置为牛奶的箱数。假定有顾客分别使用了该商店面值为50的购物券、面值为100的购物券各消费一次,分别输出消费后商店剩下的牛奶箱数。

输入格式:
输入一个大于或等于3的整数。

输出格式:
使用了面值为50的购物券进行支付
牛奶还剩XX箱
使用了面值为100的购物券进行支付
牛奶还剩XX箱

输入样例:
在这里给出一组输入。例如:

5
输出样例:
在这里给出相应的输出。例如:

使用了面值为50的购物券进行支付
牛奶还剩4箱
使用了面值为100的购物券进行支付
牛奶还剩2箱

代码:

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        Shop shop=new Shop(in.nextInt());
        shop.coupons50.buy();
        System.out.println("牛奶还剩" + shop.getMilkCount() + "箱");
        shop.coupons100.buy();
        System.out.println("牛奶还剩" + shop.getMilkCount() + "箱");
    }
}
class Shop{
    private int milkCount;
    InnerCoupons coupons50=new InnerCoupons(50);
    InnerCoupons coupons100=new InnerCoupons(100);
    public Shop(int milkCount){
        super();
        this.milkCount=milkCount;
    }
    class InnerCoupons{
        public int value;
        public InnerCoupons(int value){
            this.value=value;
        }
        public void buy(){
            System.out.println("使用了面值为" +value + "的购物券进行支付");
            milkCount=milkCount-value/50;
        }
    }
    public int getMilkCount(){
        return milkCount;
    }
    public void setMilkCount(int milkCount){
        this.milkCount=milkCount;
    }
}
View Code

类图:

 

 

小结:还是老问题,注意审题。刚开始并没有想写getCount方法,输出的时候直接get用户输入的牛奶箱数,用100元券的时候count-2,查看编译结果的时候发现答案错误,还有测试点没有通过,用测试案例进行了测试,发现输出部分有问题,进行了修改并添加了getCount方法。

3 、动物发声模拟器(多态)

设计一个动物发生模拟器,用于模拟不同动物的叫声。比如狮吼、虎啸、狗旺旺、猫喵喵……。
定义抽象类Animal,包含两个抽象方法:获取动物类别getAnimalClass()、动物叫shout();
然后基于抽象类Animal定义狗类Dog、猫类Cat和山羊Goat,用getAnimalClass()方法返回不同的动物类别(比如猫,狗,山羊),用shout()方法分别输出不同的叫声(比如喵喵、汪汪、咩咩)。
最后编写AnimalShoutTest类测试,输出:
猫的叫声:喵喵
狗的叫声:汪汪
山羊的叫声:咩咩

其中,在AnimalShoutTestMain类中,用speak(Animal animal){}方法输出动物animal的叫声,在main()方法中调用speak()方法,分别输出猫、狗和山羊对象的叫声。

请在下面的【】处添加代码。

//动物发生模拟器. 请在下面的【】处添加代码。
public class AnimalShoutTest2 {
public static void main(String[] args) {
Cat cat = new Cat();
Dog dog = new Dog();
Goat goat = new Goat();
speak(cat);
speak(dog);
speak(goat);
}
//定义静态方法speak()
【】

}

//定义抽象类Animal
【】class Animal{
【】
}
//基于Animal类,定义猫类Cat,并重写两个抽象方法
class Cat 【】{
【】
【】
}
//基于Animal类,定义狗类Dog,并重写两个抽象方法
class Dog 【】{
【】
【】
}
//基于Animal类,定义山羊类Goat,并重写两个抽象方法
class Goat 【】{
【】
【】
}
输入样例:

输出样例:
猫的叫声:喵喵
狗的叫声:汪汪
山羊的叫声:咩咩

代码:

public class Main{
    public static void main(String[] args){
        Cat cat=new Cat();
        Dog dog=new Dog();
        Goat goat=new Goat();
        speak(cat);
        speak(dog);
        speak(goat);
    }
    static void speak(Animal animal){
        System.out.print(animal.getAnimalClass()+"的叫声:");
        animal.shout();
    }
}
abstract class Animal{
    abstract void shout();
    abstract String getAnimalClass();
}
class Cat extends Animal{
    void shout(){
        System.out.println("喵喵");
    }
    String getAnimalClass(){
        return "猫";
    }
}
class Dog extends Animal{
    void shout(){
        System.out.println("汪汪");
    }
    String getAnimalClass(){
        return "狗";
    }
}
class Goat extends Animal{
    void shout(){
        System.out.println("咩咩");
    }
    String getAnimalClass(){
        return "山羊";
    }
}
View Code

类图:

 

 小结:本次实验先定义了动物类作为父类,羊狗猫为三个子类,继承于父类,可硬省去很多重复冗杂的步骤,因为已经由父类统一定义。在非主类的类中,我们需要做的只有获取用户输入动物的类,然后输出他们的叫声,最后在主类中调用输出方法。难度不大,也要注意题目要求,当然用我们刚开始学java时的技术也能写,但是测试点不会完全正确,需要符合题目要求。

总结:

三次习题的侧重点都在于电信计费,通过写代码让我们熟悉继承,多态,接口等相关知识。当然写题的过程并不是都很顺利,基础知识我还有一些地方掌握的并不熟练,包括接口的运用,我会在课下时间及时夯实基础,看幕课的同时复习课上所学知识。

 

posted on 2022-12-04 12:53  就是贺峻霖  阅读(124)  评论(0编辑  收藏  举报

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