實驗要求

https://pan.baidu.com/s/1kqfW9f28Z7wkDIYDDsh_XQ

原始碼

/*
 * 班級：信1705-1
 * 學號：20173458
 * 姓名：王嘉樑
*/
package subway;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;

class Subway{
    private String lineNumber=null
 
;
    private String lineName=null;
    private String transferInformation=null;
    public void lineInformation() {}
    public void querySite() {}
    public int buyTicket(int siteNumber) {
        if(siteNumber%3==0)
            return siteNumber/3;
        else
            return siteNumber/3+1;
    }
    
 
public String getLineNumber() {
        return lineNumber;
    }
    public void setLineNumber(String lineNumber) {
        this.lineNumber = lineNumber;
    }
    public String getLineName() {
        return lineName;
    }
    public void setLineName(String lineName) {
        this.lineName = lineName;
    }
    
 
public String getTransferInformation() {
        return transferInformation;
    }
    public void setTransferInformation(String transferInformation) {
        this.transferInformation = transferInformation;
    }
}
class FirstLineSubway extends Subway{
    private String[] lineNames;     //1號線所有站點名
    FirstLineSubway(){
        super();
        try {
            BufferedReader br = new BufferedReader(new FileReader("shijiazhuang-subway.txt"));
            String firstLine = br.readLine();
            String[] str = firstLine.split(",");
            setLineNumber(str[0]);
            setLineName(str[1]);
            setTransferInformation(str[2]);
            lineNames = getLineName().split("、");
            br.close();
        } catch (FileNotFoundException e1) {
            System.out.println("shijiazhuang-subway.txt檔案不存在!");
        } catch (IOException e2) {
            System.out.println("IO流異常!");
        }
    }
    public void lineInformation() {
        for(int i=0;i<lineNames.length;i++){
            if(lineNames[i].compareTo(getTransferInformation()) == 0)
                System.out.println(getLineNumber()+ ":" + lineNames[i] + "\t可換乘3號線");
            else
                System.out.println(getLineNumber()+ ":"  + lineNames[i]);
        }
    }
    public String[] querySite(String begin,String end) {
        int be=-1,en=-1,mid=-1;
        String[] s = new String[6];
        for(int i=0;i<lineNames.length;i++){
            if(lineNames[i].compareTo(getTransferInformation()) == 0)
                mid = i;
            if(lineNames[i].compareTo(begin) == 0)
                be = i;
            if(lineNames[i].compareTo(end) == 0)
                en = i;
        }
        if(be>-1 && en>-1) {
            s[0]="true";       //s[0]代表是否為起點，若是則s[1]為起點站在陣列內位置。
            s[1]=Integer.toString(be);
            s[2]="true";       //s[2]代表是否為終點站，若是則s[3]為終點站在陣列內位置。
            s[3]=Integer.toString(en);
            s[4]=Integer.toString(be<en?en-be:be-en);   //s[4]為站點數差值。
        }
        else if(be>-1 && en==-1 && be!=mid) {
            s[0]="true";
            s[1]=Integer.toString(be);
            s[2]="false";
            s[3]="-1";
            s[4]= Integer.toString(be<mid?mid-be:be-mid);
        }
        else if(be==-1 && en!=-1 && en!=mid) {
            s[0]="false";
            s[1]="-1";
            s[2]="true";
            s[3]=Integer.toString(en);
            s[4]= Integer.toString(en<mid?mid-en:en-mid);
        }
        else {
            s[0]="false";
            s[1]="-1";
            s[2]="false";
            s[3]="-1";
            s[4]="0";
        }
        s[5]=Integer.toString(mid);    //s[5]為換乘站點（即新百廣場）在陣列內的位置
        return s;
    }
    public String[] getLineNames() {
        return lineNames;
    }
}
class ThirdLineSubway extends Subway{
    private String[] lineNames;     //3號線所有站點名
    ThirdLineSubway(){
        super();
        try {
            BufferedReader br = new BufferedReader(new FileReader("shijiazhuang-subway.txt"));
            String thirdLine = br.readLine();
            thirdLine = br.readLine();
            String[] str = thirdLine.split(",");
            setLineNumber(str[0]);
            setLineName(str[1]);
            setTransferInformation(str[2]);
            lineNames = getLineName().split("、");
            br.close();
        } catch (FileNotFoundException e1) {
            System.out.println("shijiazhuang-subway.txt檔案不存在!");
        } catch (IOException e2) {
            System.out.println("IO流異常!");
        }
    }
    public void lineInformation() {
        for(int i=0;i<lineNames.length;i++){
            if(lineNames[i].compareTo(getTransferInformation()) == 0)
                System.out.println(getLineNumber()+ ":"  + lineNames[i] + "\t可換乘1號線");
            else
                System.out.println(getLineNumber()+ ":"  + lineNames[i]);
        }
    }
    public String[] querySite(String begin,String end) {
        int be=-1,en=-1,mid=-1;
        String[] s = new String[6];
        for(int i=0;i<lineNames.length;i++){
            if(lineNames[i].compareTo(getTransferInformation()) == 0)
                mid = i;
            if(lineNames[i].compareTo(begin) == 0)
                be = i;
            if(lineNames[i].compareTo(end) == 0)
                en = i;
        }
        if(be>-1 && en>-1) {
            s[0]="true";
            s[1]=Integer.toString(be);
            s[2]="true";
            s[3]=Integer.toString(en);
            s[4]=Integer.toString(be<en?en-be:be-en);
        }
        else if(be>-1 && en==-1 && be!=mid) {
            s[0]="true";
            s[1]=Integer.toString(be);
            s[2]="false";
            s[3]="-1";
            s[4]= Integer.toString(be<mid?mid-be:be-mid);
        }
        else if(be==-1 && en!=-1 && en!=mid) {
            s[0]="false";
            s[1]="-1";
            s[2]="true";
            s[3]=Integer.toString(en);
            s[4]= Integer.toString(en<mid?mid-en:en-mid);
        }
        else {
            s[0]="false";
            s[1]="-1";
            s[2]="false";
            s[3]="-1";
            s[4]="0";
        }
        s[5]=Integer.toString(mid);
        return s;
    }
    public String[] getLineNames() {
        return lineNames;
    }
}
public class SubwayManager {
    public static void main(String[] args) {
        int i;
        Scanner sc = new Scanner(System.in);
        Subway s = new Subway();
        FirstLineSubway fls = new FirstLineSubway();
        ThirdLineSubway tls = new ThirdLineSubway();
        do
        {
            welcome1();
            welcome2();
            i=sc.nextInt();
            switch(i) {
            case 1:
                System.out.print("請線路號（1或3；0顯示全部）：");
                i=sc.nextInt();
                line();
                switch(i) {
                case 0:fls.lineInformation();tls.lineInformation();break;
                case 1:fls.lineInformation();break;
                case 3:tls.lineInformation();break;
                default:System.out.println("請正確選擇!");
                }break;
            case 2:
                welcome1();
                System.out.print("起始站：");
                String begin = sc.next();
                System.out.print("終點站：");
                String end = sc.next();
                System.out.print("購票數量：");
                int number = sc.nextInt();
                System.out.println("***************************************************************");
                welcome1();
                String[] s1 = fls.querySite(begin, end);
                String[] s2 = tls.querySite(begin, end);
                String[] str1 = fls.getLineNames();
                String[] str2 = tls.getLineNames();
                int be,en,unitPrice=0;
                //全在1號線
                if(s1[0].compareTo("true")==0 && s1[2].compareTo("true")==0) {
                    System.out.println(s1[4] + "站");
                    be=Integer.parseInt(s1[1]);
                    en=Integer.parseInt(s1[3]);
                    if(en>be)
                        for(i=be;i<=en;i++)
                            System.out.println(str1[i]);
                    else
                        for(i=be;i>=en && i>=0;i--)
                            System.out.println(str1[i]);
                    unitPrice = s.buyTicket(Integer.parseInt(s1[4]));
                }
                //一半在1號線
                if(s1[0].compareTo("true")==0 && s1[2].compareTo("false")==0) {
                    System.out.println(Integer.parseInt(s1[4]) + Integer.parseInt(s2[4]) + "站");
                    be=Integer.parseInt(s1[1]);
                    en=Integer.parseInt(s1[5]);
                    if(en>be)
                        for(i=be;i<en;i++)
                            System.out.println(str1[i]);
                    else
                        for(i=be;i>en && i>=0;i--)
                            System.out.println(str1[i]);
                    System.out.println(str1[i] + "\t換乘3號線");
                    be=Integer.parseInt(s2[5]);
                    en=Integer.parseInt(s2[3]);
                    if(en>be)
                        for(i=be+1;i<=en;i++)
                            System.out.println(str2[i]);
                    else
                        for(i=be-1;i>=en && i>=0;i--)
                            System.out.println(str2[i]);
                    unitPrice = s.buyTicket(Integer.parseInt(s1[4]) + Integer.parseInt(s2[4]));
                }
                if(s1[0].compareTo("false")==0 && s1[2].compareTo("true")==0) {
                    System.out.println(Integer.parseInt(s1[4]) + Integer.parseInt(s2[4]) + "站");
                    be=Integer.parseInt(s2[1]);
                    en=Integer.parseInt(s2[5]);
                    if(en>be)
                        for(i=be;i<en;i++)
                            System.out.println(str2[i]);
                    else
                        for(i=be;i>en && i>=0;i--)
                            System.out.println(str2[i]);
                    System.out.println(str2[i] + "\t換乘1號線");
                    be=Integer.parseInt(s1[5]);
                    en=Integer.parseInt(s1[3]);
                    if(en>be)
                        for(i=be+1;i<=en;i++)
                            System.out.println(str1[i]);
                    else 
                        for(i=be-1;i>=en && i>=0;i--)
                            System.out.println(str1[i]);
                    unitPrice = s.buyTicket(Integer.parseInt(s1[4]) + Integer.parseInt(s2[4]));
                }
                //全在3號線
                if(s1[0].compareTo("false")==0 && s1[2].compareTo("false")==0) {
                    System.out.println(s2[4] + "站");
                    be=Integer.parseInt(s2[1]);
                    en=Integer.parseInt(s2[3]);
                    if(en>be)
                        for(i=be;i<=en;i++)
                            System.out.println(str2[i]);
                    else
                        for(i=be;i>=en && i>=0;i--)
                            System.out.println(str2[i]);
                    unitPrice = s.buyTicket(Integer.parseInt(s2[4]));
                }
                System.out.println("購票單價：" + unitPrice + "元");
                System.out.println("購票金額：" + unitPrice*number + "元");
                System.out.println("***************************************************************");
                break;
            default:System.out.println("請正確選擇!");
            }
        }while(true);
    }
    public static void welcome1() {
        System.out.println("***************************************************************");
        System.out.println("歡迎乘坐石家莊地鐵");
        System.out.println("***************************************************************");
    }
    public static void welcome2() {
        System.out.println("1、顯示具體線路資訊；");
        System.out.println("2、購票；");
        System.out.println("***************************************************************");
    }
    public static void line() {
        System.out.println("***************************************************************");
        System.out.println("石家莊地鐵線路圖");
        System.out.println("***************************************************************");
    }
}

shijiazhuang-subway.txt內容

1號線,洨河大道、南村、石家莊東站、火炬廣場、留村、白佛、朝暉橋、談固、北宋、體育場、博物院、北國商城、平安大街、解放廣場、新百廣場、烈士陵園、和平醫院、長城橋、時光街、西王,新百廣場
3號線,市二中、新百廣場、東里、槐安橋、西三教、石家莊站,新百廣場