南昌航空大学 软件学院 pta Java 第六次作业 蔡珂 opp
激动的心,颤抖的手。
终于熬过了边角线三次作业了。
难度可以说是腰斩。
基本就是按图说话。
但第一题还是有点点麻烦。
别急,先把代码贴上去。
题目列表
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。
代码如下
import java.util.Comparator;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Objects;
import java.util.Scanner;
import java.util.Date;
public class Main {
static String []tel = {"0792","0793","0794","0795","0796","0797","0798","0799","0701"};
public static void main(String[] args) throws ParseException {
Scanner input = new Scanner(System.in);
String ch = new String();
ch = input.nextLine();
ArrayList<User>users = new ArrayList<>();
SimpleDateFormat date=new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
// System.out.printf(ch);
while (!ch.equals("end")) {
// System.out.printf(ch+"\n");
try {
if ((ch.matches("^u-[0-9]{11,12} 0$") || ch.matches("^t-[0]{1}[0-9]{9,11} [0]{1}[0-9]{9,11} [0-9]{4}[.](([1-9]{1})|([1]{1}[0-2]{1}))[.]([1-9]|([1-2]{1}[0-9]{1})|(3[0-1])) (([0-1][0-9])|(2[0-3]))[:]([0-5][0-9])[:]([0-5][0-9]) [0-9]{4}[.](([1-9]{1})|([1]{1}[0-2]{1}))[.]([1-9]|([1-2]{1}[0-9]{1})|3[0-1]) (([0-1][0-9])|(2[0-3]))[:]([0-5][0-9])[:]([0-5][0-9])$"))) {
String[] splitSet = ch.split("-");
//String[] splitset2 = splitSet[1].split(" ");
if (splitSet[0].equals("u")) {
String[] splitSet2 = splitSet[1].split(" ");
if(!numEqual(users,splitSet2[0])){
try {
users.add(newUesr(splitSet2[0]));
} catch (Exception a){
}
}
} else {
users = newRecord(users, splitSet[1]);
}
}
}catch (Exception e){
}
ch = input.nextLine();
}
Collections.sort(users, new Cmp());
for(User U:users){
try {
System.out.println(U.getNumber()+" "+printDouble(U.calCost())+" "+printDouble(U.calBalance()));
}
catch (Exception ps){
}
}
}
static User newUesr(String ch){
User user = new User(ch);
user.chargeMode = new LandlinePhoneCharging();
return user;
}
public static double printDouble(double num) {
String str = String.format("%.3f",num);
num = Double.parseDouble(str);
return num;
}
static boolean numEqual(ArrayList<User> User,String num){
for(User user:User){
if(user.getNumber().equals(num))
return true;
}
return false;
}
static ArrayList<User> newRecord(ArrayList<User> user,String ch) throws ParseException {
String[] splitSet = ch.split(" ");
CallRecord callRecord = new CallRecord(splitSet[2],splitSet[3],splitSet[4],splitSet[5],splitSet[0].substring(0,4),splitSet[1].substring(0,4));
for(User U : user){
if(U.number.equals(splitSet[0])){
if(callRecord.callingAddressAreaCode.equals(callRecord.answerAddressAreaCode)){
U.getUserRecords().addCallingInCityRecords(callRecord);
return user;
}
for(String tel2:tel){
if(callRecord.answerAddressAreaCode.equals(tel2)){
U.getUserRecords().addCallingInProvinceRecords(callRecord);
return user;
}
}
U.getUserRecords().addCallingInLandRecords(callRecord);
return user;
}
}
return user;
}
}
abstract class CallChargeRule extends ChargeRule{
public abstract double calCost(CallRecord callRecord);
}
class CallRecord extends CommunicationRecord{
Date startTime,endTime;
String callingAddressAreaCode,answerAddressAreaCode;
public CallRecord(){}
public CallRecord(String a,String b,String c,String d,String callingAddressAreaCode,String answerAddressAreaCode) throws ParseException {
super();
SimpleDateFormat date=new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
this.callingAddressAreaCode =callingAddressAreaCode;
this.answerAddressAreaCode = answerAddressAreaCode;
this.setStartTime(date.parse(a+" "+b));
this.setEndTime(date.parse(c+" "+d));
}
Date getStartTime(){
return startTime;
}
Date getEndTime(){
return endTime;
}
String getCallingAddressAreaCode(){
return callingAddressAreaCode;
}
String getAnswerAddressAreaCode(){
return answerAddressAreaCode;
}
void setStartTime(Date startTime){
this.startTime = startTime;
}
void setEndTime(Date endTime){
this.endTime = endTime;
}
void setCallingAddressAreaCode(String callingAddressAreaCode){
this.callingAddressAreaCode=callingAddressAreaCode;
}
void setAnswerAddressAreaCode(String answerAddressAreaCode){
this.answerAddressAreaCode =answerAddressAreaCode;
}
}
abstract class ChargeMode {
ArrayList<ChargeRule>chargeRules =new ArrayList<ChargeRule>();
ArrayList<ChargeRule> getChargeRules(){
return chargeRules;
}
void setChargeRules(ArrayList<ChargeRule> chargeRules) {
this.chargeRules = (ArrayList<ChargeRule>) (chargeRules.clone());
}
public abstract double calCost(UserRecords userRecords);
public abstract double getMonthlyRent();
}
abstract class ChargeRule {
}
class Cmp implements Comparator<User> {
@Override
public int compare(User U1, User U2) {
return U1.getNumber().compareTo(U2.getNumber());
}
}
abstract class CommunicationRecord {
String callingNumer,answerNumer;
void setCallingNumer(String callingNumer){
this.callingNumer=callingNumer;
}
void setAnswerNumer(String answerNumer){
this.answerNumer =answerNumer;
}
String getCallingNumer(){
return callingNumer;
}
String getAnswerNumer(){
return answerNumer;
}
}
class LandlinePhoneCharging extends ChargeMode {
double monthlyRent =20;
public double calCost(UserRecords userRecords){
double sum=0;
for (CallRecord callRecord:userRecords.getCallingInCityRecords())
sum+= new LandPhoneInCityRule().calCost(callRecord);
for (CallRecord callRecord:userRecords.getCallingInLandRecords())
sum+= new LandPhoneInLandRule().calCost(callRecord);
for (CallRecord callRecord:userRecords.getCallingInProvinceRecords())
sum+= new LandPhoneInProvinceRule().calCost(callRecord);
return sum;
}
public double getMonthlyRent(){
return monthlyRent;
}
}
class LandPhoneInCityRule extends CallChargeRule{
@Override
public double calCost(CallRecord callRecord) {
double sec = (callRecord.getEndTime().getTime() -callRecord.getStartTime().getTime())/ 1000;
if (sec < 0) {
return 0;
}
double minu = (int) sec / 60;
if (sec % 60 != 0) {
minu += 1;
}
return minu * 0.1;
}
}
class LandPhoneInLandRule extends CallChargeRule{
@Override
public double calCost(CallRecord callRecord) {
double sec = (callRecord.getEndTime().getTime() -callRecord.getStartTime().getTime())/ 1000;
if (sec < 0) {
return 0;
}
double minu = (int) sec / 60;
if (sec % 60 != 0) {
minu += 1;
}
return minu * 0.6;
}
}
class LandPhoneInProvinceRule extends CallChargeRule{
@Override
public double calCost(CallRecord callRecord) {
double sec = (callRecord.getEndTime().getTime() -callRecord.getStartTime().getTime())/ 1000;
if (sec < 0) {
return 0;
}
double minu = (int) sec / 60;
if (sec % 60 != 0) {
minu += 1;
}
return minu * 0.3;
}
}
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;
public User(){}
public User(String number){
this.number = number;
}
double calBalance(){
return balance -chargeMode.getMonthlyRent() - chargeMode.calCost(userRecords);
}
double calCost(){
return chargeMode.calCost(userRecords);
}
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>();
void addCallingInCityRecords(CallRecord callRecord){
callinglnCityRecords.add(callRecord);
}
void addCallingInProvinceRecords(CallRecord callRecord){
callinglnProvinceRecords.add(callRecord);
}
void addCallingInLandRecords(CallRecord callRecord){
callinglnLandRecords.add(callRecord);
}
void addAnswerInCityRecords(CallRecord callRecord){
answerlnCityRecords.add(callRecord);
}
void addAnswerInProvinceRecords(CallRecord callRecord){
answerlnProvinceRecords.add(callRecord);
}
void addAnswerInLandRecords(CallRecord callRecord){
answerlnLandRecords.add(callRecord);
}
void addSendMessageRecords(MessageRecord messageRecord){
sendMessageRecords.add(messageRecord);
}
void addReceiveMessageRecords(MessageRecord messageRecord){
receiveMessageRecords.add(messageRecord);
}
ArrayList<CallRecord> getCallingInCityRecords(){
return callinglnCityRecords;
}
ArrayList<CallRecord> getCallingInProvinceRecords(){
return callinglnProvinceRecords;
}
ArrayList<CallRecord> getCallingInLandRecords(){
return callinglnLandRecords;
}
ArrayList<CallRecord> getAnswerInCityRecords(){
return answerlnCityRecords;
}
ArrayList<CallRecord> getAnswerInProvinceRecords(){
return answerlnProvinceRecords;
}
ArrayList<CallRecord> getAnswerInLandRecords(){
return answerlnLandRecords;
}
ArrayList<MessageRecord> getSendMessageRecords(){
return sendMessageRecords;
}
ArrayList<MessageRecord> getReceiveMessageRecords(){
return receiveMessageRecords;
}
}
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。
代码如下
import java.util.Scanner;
interface Container {
public static final double pi=3.1415926;
//抽象方法:
public abstract double area();
public abstract double volume();
static double sumofArea(Container c[],int n){
double num=0;
for(int i=1;i<=n;i++){
num+=c[i].area();
// System.out.printf(i+" "+"a"+num+"\n");
}
return num;
}
static double sumofVolume(Container c[],int n){
double num=0;
for(int i=1;i<=n;i++) {
num += c[i].volume();
// System.out.printf("v" + num + "\n");
}
return num;
}
}
public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int n= input.nextInt();
Shape []c = new Shape[1000];double a=0,b=0;
// c[0] = new Cylinder();
for(int i=1;i<=n;i++)
{
String ch= input.next();
// System.out.printf(ch+" \n");
if(ch.equals("cube")){
a = input.nextDouble();
c[i] = new Cube(a);
// System.out.printf("114514-");
}
else if(ch.equals("cylinder")){
a = input.nextDouble();
b = input.nextDouble();
c[i] = new Cylinder(a,b);
// System.out.printf("114532-");
}
// System.out.printf(i+" "+c[1].area()+" "+c[1].volume()+"\n");
}
System.out.printf("%.2f\n%.2f",Container.sumofArea(c,n),Container.sumofVolume(c,n));
}
}
class Cylinder extends Shape{
public double a,b;
public Cylinder(){
}
public Cylinder(double c,double d){
a=c;
b=d;
}
public double area() {
return pi*a*a*2+2*pi*a*b;
}
public double volume(){
return pi*a*a*b;
}
}
class Cube extends Shape{
public double a=0;
public Cube(){
}
public Cube(double b){
a=b;
}
public double area() {
return a*a*6;
}
public double volume(){
return a*a*a;
}
}
abstract class Shape implements Container{
}
很简单蛤,嘻嘻