一、前言
1、pta题目集6总结
本次题目集主要是根据类图，写电信计费的座机计费，难度并不是特别大，但是因为是电信计费的基础，为了后续方便需要对本次作业有较深的了解，要条理清晰。
2、pta题目集7总结
本次题目是在题目集六的基础上，加上了手机计费，相对于上一次的题目难度加大，手机计费的情况变多，在判断时需要考虑的更多，另外两道题相对来说就比较简单了。
3、pta题目集8总结
本次题目集相对于题目集7来说，就计较简单了，短信计费的形式较少，同时本题的测试点只考察短信计费，所以相对来说就简单了，另外两道题基本可以根据题目意思直接编写并不是很难。
二、设计与分析
1、pta题目集6
1）7-1 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：
源码如下：
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String[] args) {
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 (Double.parseDouble(u1.getNumber()) > Double.parseDouble(u2.getNumber())) {
return 1;
} else {
return -1;
}
}
});
for (User u : users) {
System.out.println(u.getNumber()+" "+ OutFormat.doubleFormat(u.calCost())+" "+ OutFormat.doubleFormat(u.calBalance()));
}
}
}
class OutFormat {
public static Double doubleFormat(double b){
DecimalFormat df=new DecimalFormat("#.0");
Double output=Double.valueOf(df.format(b));
return output;
}
}
class Inputdeal{
public static int check(String input)
{
String[] p= input.split(" ");
if(p.length==2)
{
if (p[0].matches("^u-[0-9]{11,12}$"))
{
if(Integer.parseInt(p[1])>=0&&Integer.parseInt(p[1])<=2)
return 1;
}
} else if (p.length==6) {
if(datatf(p[2]))
if(timetf(p[3]))
if(datatf(p[4]))
if(timetf(p[5]))
{
if(p[0].matches("^t-0791[0-9]{7,8}$"))
if(p[1].matches(".[0-9]{9,11}"))
return 2;
}
}
return 0;
}
public static boolean timetf(String time)//判断输入时间格式是否正确
{
if(time.matches("^([0-1][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])$"))
{
return true;
}else return false;
}
public static boolean datatf(String data)//判断日期格式是否正确
{
Pattern p=Pattern.compile("\\d{4}+[\\.]\\d{1,2}+[\\.]\\d{1,2}+");
Matcher m=p.matcher(data);
if(!m.matches()){
return false;
}
String[] datas=data.split("\\.");
int year=Integer.parseInt(datas[0]);
int month=Integer.parseInt(datas[1]);
int day=Integer.parseInt(datas[2]);
if(month<1||month>12)
return false;
int[] months=new int[]{0,31,28,31,30,31,30,31,31,30,31,30,31};
if(month==2)
{
if(isyear(year))
months[2]=29;
else months[2]=28;
}
int monthlength=months[month];
if(day<1||day>monthlength)
return false;
return true;
}
public static boolean isyear(int year)//判断是否为闰年
{
if((year%4==0&&year%100!=0)||year%400==0)
return true;
else return false;
}
//添加新用户
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());
}
users.add(usernew);
}
public void writeRecord(ArrayList<User> users, String input) {
String[] inputs = input.split(" ");
inputs[0] = inputs[0].replace("t-", "");
User callu = null, answeru = null;
CallRecord callrecord = new CallRecord(inputs);
for (User i : users) {
if (i.getNumber().equals(inputs[0])) {
callu = i;
}
if (i.getNumber().equals(inputs[1])) {
answeru = i;
}
if (callu != null && answeru != null) {
break;
}
}
if (callu != null) {
if (callrecord.getCallType() == 1) {
callu.getUserRecords().addCallingInCityRecords(callrecord);
} else if (callrecord.getCallType() == 2) {
callu.getUserRecords().addCallingInProvinceRecords(callrecord);
} else {
callu.getUserRecords().addCallingInLandRecords(callrecord);
}
}
if (answeru != null) {
if (callrecord.getCallType() == 1) {
answeru.getUserRecords().addAnswerInCityRecords(callrecord);
} else if (callrecord.getCallType() == 2) {
answeru.getUserRecords().addAnswerInProvinceRecords(callrecord);
} else {
answeru.getUserRecords().addAnswerInLandRecords(callrecord);
}
}
}
}
////包括3种拨打记录和3种接听记录和2种短信记录,用户记录类
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 UserRecords() {
}
public void addCallingInCityRecords(CallRecord callRecord) {
this.callingInCityRecords.add(callRecord);
}
public void addCallingInProvinceRecords(CallRecord callRecord) {
this.callingInProvinceRecords.add(callRecord);
}
public void addCallingInLandRecords(CallRecord callRecord) {
this.callingInLandRecords.add(callRecord);
}
public void addAnswerInCityRecords(CallRecord callRecord) {
this.answerInCityRecords.add(callRecord);
}
public void addAnswerInProvinceRecords(CallRecord callRecord) {
this.answerInProvinceRecords.add(callRecord);
}
public void addAnswerInLandRecords(CallRecord callRecord) {
this.answerInLandRecords.add(callRecord);
}
public void addSendMessageRecords (MessageRecord messageRecord) {
this.sendMessageRecords.add(messageRecord);
}
public void addReceiveMessageRecords (MessageRecord messageRecord) {
this.receiveMessageRecords.add(messageRecord);
}
public ArrayList<MessageRecord> getSendMessageRecords(){
return this.sendMessageRecords;
}
public ArrayList<MessageRecord> getReceiveMessageRecords(){
return this.receiveMessageRecords;
}
public ArrayList<CallRecord> getCallingInCityRecords(){
return this.callingInCityRecords;
}
public ArrayList<CallRecord> getCallingInProvinceRecords(){
return this.callingInProvinceRecords;
}
public ArrayList<CallRecord> getCallingInLandRecords(){
return this.callingInLandRecords;
}
public ArrayList<CallRecord> getAnswerInCityRecords(){
return this.answerInCityRecords;
}
public ArrayList<CallRecord> getAnswerInProvinceRecords(){
return this.answerInProvinceRecords;
}
public ArrayList<CallRecord> getAnswerInLandRecords(){
return this.answerInLandRecords;
}
}
//用户类
class User{
private UserRecords userRecords = new UserRecords();//用户记录
private double balance = 100;//余额
private ChargeMode chargeMode;//计费方式
private String number;//号码
public User(Inputdeal inputHandle) {
}
public User() {
}
public double calBalance() {
this.balance = this.getBalance()-this.calCost()-this.chargeMode.getMonthlyRent();
return this.balance;
}
public double calCost() {
return this.chargeMode.calCost(this.userRecords);
}
public UserRecords getUserRecords() {
return this.userRecords;
}
public void setUserRecords(UserRecords userRecords) {
this.userRecords=userRecords;
}
public double getBalance() {
return this.balance;
}
public void setChargeMode(ChargeMode chargeMode) {
this.chargeMode=chargeMode;
}
public ChargeMode getChargeMode() {
return this.chargeMode;
}
public void setNumber(String number) {
this.number=number;
}
public String getNumber() {
return this.number;
}
}
abstract class ChargeMode {
private ArrayList<ChargeRule> chargeRules = new ArrayList<ChargeRule>();
public ArrayList<ChargeRule> getChargeRule(){
return this.chargeRules;
}
public void setChargeRule(ArrayList<ChargeRule> chargeRules) {
this.chargeRules=chargeRules;
}
public double calCost(UserRecords userRecords) {
return 0;
}
public double getMonthlyRent() {
return 0;
}
}
class LandlinePhoneCharging extends ChargeMode{
private double monthlyRent=20;
@Override
public double calCost(UserRecords userRecords){
double s=0;
CallChargeRule c = new LandPhoneInCityRule();
CallChargeRule p = new LandPhoneInProvinceRule();
CallChargeRule l = new LandPhoneInLandRule();
s+=c.calCost(userRecords.getCallingInCityRecords());
s+=p.calCost(userRecords.getCallingInProvinceRecords());
s+=l.calCost(userRecords.getCallingInLandRecords());
return s;
}
@Override
public double getMonthlyRent() {
return this.monthlyRent;
}
}
abstract class CommunicationRecord {
String callingNumber;
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 CallRecord extends CommunicationRecord{
private Date startTime = new Date();
private Date endTime = new Date();
private String callingAddressAreaCode;
private String answerAddressAreaCode;
public CallRecord(){
}
public int getCallType() {
if (callingAddressAreaCode.equals(answerAddressAreaCode)) {
return 1;
}
if (callingAddressAreaCode.matches("^079[0-9]$") || callingAddressAreaCode.equals("0701")) {
if (answerAddressAreaCode.matches("^079[0-9]$") || answerAddressAreaCode.equals("0701")) {
return 2;
}
}
return 3;
}
public CallRecord(String[] inputs) {
super();
if (inputs[0].length() == 10) {
callingAddressAreaCode = inputs[0].substring(0, 3);
} else {
callingAddressAreaCode = inputs[0].substring(0, 4);
}
if (inputs[1].length() == 10) {
answerAddressAreaCode = inputs[1].substring(0, 3);
} else {
answerAddressAreaCode = inputs[1].substring(0, 4);
}
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss", Locale.getDefault());
try {
startTime = simpleDateFormat.parse(inputs[2] + " " + inputs[3]);
endTime = simpleDateFormat.parse(inputs[4] + " " + inputs[5]);
} 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 this.startTime;
}
public void setStartTime(Date startTime) {
this.startTime=startTime;
}
public Date getEndTime() {
return this.endTime;
}
public void setEndTime(Date endTime) {
this.endTime=endTime;
}
public String getCallingAddressAreaCode() {
return this.callingAddressAreaCode;
}
public void setCallingAddressAreaCode(String callingAddressAreaCode) {
String s = callingAddressAreaCode.substring(0, 4);
this.callingAddressAreaCode=s;
}
public String getAnswerAddressAreaCode() {
return this.answerAddressAreaCode;
}
public void setAnswerAddressAreaCode(String answerAddressAreaCode) {
String s = answerAddressAreaCode.substring(0, 4);
this.answerAddressAreaCode=s;
}
}
class MessageRecord extends CommunicationRecord{
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
abstract class ChargeRule {
}
abstract class CallChargeRule extends ChargeRule{
public double calCost(ArrayList<CallRecord> callRecords){
return 0;
}
}
//座机拨打室内电话计费
class LandPhoneInCityRule extends CallChargeRule{
@Override
public double calCost(ArrayList<CallRecord> callRecords) {
double s=0;
for(CallRecord k: callRecords) {
long time1 = k.getStartTime().getTime();
long time2 = k.getEndTime().getTime();
long time = Math.abs(time1-time2);
if(time/1000%60==0) {
double minute = (double)(time/1000/60);
s=s+0.1*minute;
}
else {
double minute = (double)(time/1000/60);
s=s+0.1*(minute+1);
}
}
return s;
}
}
//座机拨打省内电话计费
class LandPhoneInProvinceRule extends CallChargeRule{
@Override
public double calCost(ArrayList<CallRecord> callRecords){
double fee=0;
for(int i=0;i<callRecords.size();i++)
{
long totaltime=callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime();
if(totaltime/1000%60==0){
double m=(double)(totaltime/1000/60);
fee+=0.3*m;
}else {
double m=(double)(totaltime/1000/60);
fee=fee+0.3*(m+1);
}
}
return fee;
}
}
//座机拨打国内电话计费
class LandPhoneInLandRule extends CallChargeRule{
@Override
public double calCost(ArrayList<CallRecord> callRecords) {
double s=0;
for(CallRecord k: callRecords) {
long time1 = k.getStartTime().getTime();
long time2 = k.getEndTime().getTime();
long time = Math.abs(time1-time2);
if(time/1000%60==0) {
double minute = (double)(time/1000/60);
s=s+0.6*minute;
}
else {
double minute = (double)(time/1000/60);
s=s+0.6*(minute+1);
}
}
return s;
}
}
View Code
心得：本次电信计费题目主要是关于座机计费，形式比较单一，相对来说比较好写，主要是根据类图进行编写，一开始写的还是比较顺畅的，后面过测试点的时候就不好了，总有一些错误，然后只能一点一点的修改，本题最大的难点在于输入格式的判断，这个时候就需要进行很多分析，大体来说难度没有特别大。
2）7-2 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
类图如下：
源码如下：
import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner s= new Scanner(System.in);
int n=s.nextInt();
Rqi[] d=new Rqi[n];
for (int i=0;i<n;i++)
{
String str=s.next();
if(str.equals("cube"))
{
d[i]=new Cube(s.nextDouble());
} else if (str.equals("cylinder")) {
d[i]=new Cylinder(s.nextDouble(),s.nextDouble());
}
}
double sv=0;
double sa=0;
for (Rqi i: d)
{
sv+=i.volume();
sa+=i.area();
}
System.out.printf("%.2f\n",sa);
System.out.printf("%.2f",sv);
}
}
abstract class Rqi implements Container{}
class Cube extends Rqi{//立方体
private double l;
public Cube (double l)
{
this.l=l;
}
public double volume()
{
return l*l*l;
}
public double area(){
return 6*l*l;
}
}
class Cylinder extends Rqi{
private double r;
private double h;
public Cylinder(double r,double h)
{
super();
this.r = r;
this.h = h;
}
public double volume()
{
return pi*r*r*h;
}
public double area()
{
return pi * r * r * 2 + 2 * pi * r * h;
}
}
interface Container{
public static final double pi=3.1415926;
public abstract double area();
public abstract double volume();
static double sumofArea(Container c[])
{
double s=0;
for (Container i:c)
{
s+=i.area();
}
return s;
}
static double sumofVolume(Container c[])
{
double s=0;
for (Container i:c)
{
s+=i.volume();
}
return s;
}
}
View Code
心得：本题难度并不大，主要是多态的一些认识，根据题目意思基本可以写出来。
2、pta题目集7
1）7-1 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。
类图：
源码如下：
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>();
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 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;
}
}
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.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 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 * 0.2;
}
}
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 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
心得：本次题目是上一道题的延续，增加了手机计费，需要判断的情况变多了，不仅有手机与手机之间的通信，还有手机与座机之间的通信，需要考虑的方面变多了，在写这道题目的时候，因为考虑的没有那么到位，写的有点困难。
2）7-2 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。
源码如下：
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner input =new Scanner(System.in);
int n=Integer.parseInt(input.nextLine());//第一行输入的n
ArrayList<String> p=new ArrayList<String>();
for(int i=0;i<n;i++)
{
String s=input.nextLine();
if(!p.contains(s))//防止重复添加
p.add(s);
}
p.sort(new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return Integer.parseInt(o1.substring(0,4))-Integer.parseInt(o2.substring(0,4));
}//返回值>=0时，o1、o2不交换位置，<0时交换位置。注意o1是下标较大的那个元素，如果要实现降序，可调换o1、o2
});
System.out.println(p.size());
for(String a:p){
System.out.println(a);
}
}
}
View Code
心得：本题难度不大，主要是考查对于list的函数是否熟悉。
3）7-3 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
源码如下：
//1、导入相关包
import java.util.ArrayList;
import java.util.Scanner;
import java.util.Collection;
import java.util.Iterator;
//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
ArrayList<Employee> c = new ArrayList<Employee>();
Scanner sc = new Scanner(System.in);
// 创建3个员工元素对象
for (int i = 0; i < 3; i++) {
String employeeName = sc.next();
int employeeAge = sc.nextInt();
Employee employee = new Employee(employeeName, employeeAge);
c.add(employee);
}
// 2、创建迭代器遍历集合
Iterator<Employee> 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
心得：本题主要考查集合框架Collection中函数的关系以及功能，所以也不是特别困难。
3、pta题目集8
1）7-1 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。
类图：
源码如下：
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
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 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 == 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;
}
}
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;
}
}
abstract class CallChargeRule extends ChargeRule {
}
class MobilePhoneMessageRule extends CallChargeRule{
@Override
public double calCost(UserRecords userRecords) {
double sum=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){
sum=number*0.1;
}else if (number<=5) {
sum=0.3+0.2*(number-3);
}else {
sum=0.7+0.3*(number-5);
}
return sum;
}
}
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
心得：本次题目主要是短信计费，相对于前面两次的题目来说就简单了许多，只要正确的添加上关于短信的函数，在判断短信的输入格式时
，主要考虑全面就差不多了，主要因为有前面两次的题目做基础，这次就没有很难。
2）7-2 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
源码如下：
import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner s=new Scanner(System.in);
int a=s.nextInt();
Shop myshop=new Shop();
myshop.setMilkCount(a);
myshop.coupons50.buy();
System.out.println("牛奶还剩"+myshop.getMilkCount()+"箱");
myshop.coupons100.buy();
System.out.println("牛奶还剩"+myshop.getMilkCount()+"箱");
}
}
class Shop{
private int milkCount;
InnerCoupons coupons50=new InnerCoupons(50);
InnerCoupons coupons100=new InnerCoupons(100);
public Shop(){
}
public int getMilkCount() {
return milkCount;
}
public void setMilkCount(int milkCount) {
this.milkCount = milkCount;
}
class InnerCoupons{
public int value;
public InnerCoupons(int value){
this.value=value;
}
public void buy(){
milkCount=milkCount-value/50;
System.out.println("使用了面值为"+value+"的购物券进行支付");
}
}
}
View Code
心得：这个题目的难度不大，根据题目意思编写就好。
3）7-3 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 【】{
【】
【】
}
源码如下：
//动物发生模拟器. 请在下面的【】处添加代码。
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);
}
//定义静态方法speak()
public static void speak(Animal animal){
System.out.println(animal.getAimalClass()+"的叫声："+animal.shout());
}
}
//定义抽象类Animal
abstract class Animal{
abstract public String getAimalClass();
abstract public String shout();
}
//基于Animal类，定义猫类Cat，并重写两个抽象方法
class Cat extends Animal{
@Override
public String getAimalClass() {
return "猫";
}
@Override
public String shout() {
return "喵喵";
}
}
//基于Animal类，定义狗类Dog，并重写两个抽象方法
class Dog extends Animal{
@Override
public String getAimalClass() {
return "狗";
}
@Override
public String shout() {
return "汪汪";
}
}
//基于Animal类，定义山羊类Goat，并重写两个抽象方法
class Goat extends Animal{
@Override
public String getAimalClass() {
return "山羊";
}
@Override
public String shout() {
return "咩咩";
}
}
View Code
心得：本题也是对于多态的理解，难度不大。
三、总结
这3次题目集主要是关于电信计费，考查的方向大致是继承、多态、集合。通过这些题目的练习，对于继承、多态、集合有了一定的认识，但是在写的时候还是有困难，所以还有很多需要学习。这次的题目还巩固了正则表达式的使用，本人还有许多的知识点不熟悉，之后会更加努力的学习。
标签：inputs,return,String,ArrayList,BLOG,void,public From： https://www.cnblogs.com/jiang-jq12/p/16948713.html