美文网首页
Java OJ 作业3

Java OJ 作业3

作者: V0W | 来源:发表于2018-09-29 10:32 被阅读0次

    131 - 员工类

    Description

    假定要为某个公司编写雇员工资支付程序，这个公司有各种类型的雇员（Employee），不同类型的雇员按不同的方式支付工资（都是整数）：
（1）经理（Manager）——每月获得一份固定的工资
（2）销售人员（Salesman）——在基本工资的基础上每月还有销售提成
（3）一般工人（Worker）——则按他每月工作的天数计算工资
在Employee中提供函数getSalary()计算每个雇员一个月的工资，并在子类中重写。

在main函数中构造Employee的三个变量，分别指向Manager、Salesman、Worker的对象，调用getSalary函数，输出三个对象的工资

    Input

    经理的月工资 
销售人员的基本工资 销售人员的提成
工人的工作天数 工人每天的工资

    Output

    经理的工资
销售人员的工资
工人的工资

    Sample Input

    12000
3000 5000
22 200

    Sample Output

    12000
8000
4400

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Employee e1,e2,e3;
        Scanner scan = new Scanner(System.in);
        int mangersalary = scan.nextInt();
        e1 = new Manager(mangersalary);
        int salesmanbase = scan.nextInt();
        int salesmanextra = scan.nextInt();
        e2 = new Salesman(salesmanbase,salesmanextra);
        int days = scan.nextInt();
        int workerbase = scan.nextInt();
        e3 = new Worker(days,workerbase);
        System.out.println(e1.getSalary());
        System.out.println(e2.getSalary());
        System.out.println(e3.getSalary());
    }
}
class Employee {
    int salary;
    public int getSalary(){
       return 0;
    }
}

class Manager extends Employee{
    Manager(int s){
        this.salary = s;
    }

    public int getSalary() {
        return salary;
    }
}


class Salesman extends Employee{
    int base;
    int extra;
    Salesman(int a,int b){
        this.base = a;
        this.extra = b;
        this.salary = a+b;
    }

    @Override
    public int getSalary() {
        return salary;
    }
}

class Worker extends Employee{
    int days;
    int base;
    Worker(int d,int b){
        this.base = b;
        this.days = d;
        this.salary = d*b;
    }

    public int getSalary(){
        return salary;
    }
}

    132 - 员工类-2

    Description

    修改题目131的员工类，使得Employee类为抽象类，getSalary()方法是抽象方法

    Input

    经理的月工资 
销售人员的基本工资 销售人员的提成
工人的工作天数 工人每天的工资

    Output

    经理的工资
销售人员的工资
工人的工资

    Sample Input

    12000
3000 5000
22 200

    Sample Output

    12000
8000
4400

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Employee e1,e2,e3;
        Scanner scan = new Scanner(System.in);
        int mangersalary = scan.nextInt();
        e1 = new Manager(mangersalary);
        int salesmanbase = scan.nextInt();
        int salesmanextra = scan.nextInt();
        e2 = new Salesman(salesmanbase,salesmanextra);
        int days = scan.nextInt();
        int workerbase = scan.nextInt();
        e3 = new Worker(days,workerbase);
        System.out.println(e1.getSalary());
        System.out.println(e2.getSalary());
        System.out.println(e3.getSalary());
    }
}
abstract class Employee {
    int salary;
    public abstract int getSalary();
}

class Manager extends Employee{
    Manager(int s){
        this.salary = s;
    }

    public int getSalary() {
        return salary;
    }
}


class Salesman extends Employee{
    int base;
    int extra;
    Salesman(int a,int b){
        this.base = a;
        this.extra = b;
        this.salary = a+b;
    }

    @Override
    public int getSalary() {
        return salary;
    }
}

class Worker extends Employee{
    int days;
    int base;
    Worker(int d,int b){
        this.base = b;
        this.days = d;
        this.salary = d*b;
    }

    public int getSalary(){
        return salary;
    }
}

    133 - Shape类-2

    Description

    定义一个形状类Shape，提供计算周长getPerimeter()和面积getArea()的函数
定义一个子类正方形类Square继承自Shape类，拥有边长属性，提供构造函数，能够计算周长getPerimeter()和面积getArea()
定义一个子类长方形类Rectangle继承自Square类，拥有长、宽属性，提供构造函数，能够计算周长getPerimeter()和面积getArea()
定义一个子类圆形类Circle继承自Shape，拥有半径属性，提供构造函数，能够计算周长getPerimeter()和面积getArea()

在main函数中，分别构造三个Shape类的变量，分别指向一个Square、Rectangle、Circle对象，并输出他们的周长、面积.

    Input

    正方形类的边长
长方形类的长宽
圆类的半径

    Output

    正方形的周长、面积
长方形的周长、面积
圆形的周长、面积

    Sample Input

    1
1 2
2

    Sample Output

    4.00 1.00
6.00 2.00
12.57 12.57

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Shape s1,s2,s3;
        Scanner scan = new Scanner(System.in);
        double length = scan.nextDouble();
        s1 = new Square(length);
        System.out.printf("%.2f ",s1.getPerimeter());
        System.out.printf("%.2f\n",s1.getArea());

        length = scan.nextDouble();
        double wide = scan.nextDouble();
        s2 = new Rectangle(length,wide);
        System.out.printf("%.2f ",s2.getPerimeter());
        System.out.printf("%.2f\n",s2.getArea());

        double radius = scan.nextDouble();
        s3 = new Circle(radius);
        System.out.printf("%.2f ",s3.getPerimeter());
        System.out.printf("%.2f\n",s3.getArea());

        scan.close();
    }
}

abstract class Shape{
    public abstract double getPerimeter();
    public abstract double getArea();
}

class Square extends Shape {
    double length;
    Square(double length){
        this.length = length;
    }
    @Override
    public double getPerimeter(){
        return 4*length;
    }

    @Override
    public double getArea() {
        return length*length;
    }
}

class Rectangle extends Square{
    double width;
    Rectangle(double length,double width){
        super(length);
        this.width = width;
    }

    @Override
    public double getArea() {
        return length*width;
    }

    @Override
    public double getPerimeter() {
        return 2*(length+width);
    }
}

class Circle extends Shape {
    double r;
    Circle(double rr){
        this.r = rr;
    }

    @Override
    public double getPerimeter() {
        return 2*Math.PI*r;
    }

    @Override
    public double getArea() {
        return Math.PI*r*r;
    }
}

    134 - Shape类-3

    Description

    修改题目133，将Shape类改为抽象类

    Input

    正方形类的边长
长方形类的长宽
圆类的半径

    Output

    正方形的周长、面积
长方形的周长、面积
圆形的周长、面积

    Sample Input

    1
1 2
2

    Sample Output

    4.00 1.00
6.00 2.00
12.57 12.57

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Shape s1,s2,s3;
        Scanner scan = new Scanner(System.in);
        double length = scan.nextDouble();
        s1 = new Square(length);
        System.out.printf("%.2f ",s1.getPerimeter());
        System.out.printf("%.2f\n",s1.getArea());

        length = scan.nextDouble();
        double wide = scan.nextDouble();
        s2 = new Rectangle(length,wide);
        System.out.printf("%.2f ",s2.getPerimeter());
        System.out.printf("%.2f\n",s2.getArea());

        double radius = scan.nextDouble();
        s3 = new Circle(radius);
        System.out.printf("%.2f ",s3.getPerimeter());
        System.out.printf("%.2f\n",s3.getArea());

        scan.close();
    }
}

abstract class Shape{
    public abstract double getPerimeter();
    public abstract double getArea();
}

class Square extends Shape {
    double length;
    Square(double length){
        this.length = length;
    }
    @Override
    public double getPerimeter(){
        return 4*length;
    }

    @Override
    public double getArea() {
        return length*length;
    }
}

class Rectangle extends Square{
    double width;
    Rectangle(double length,double width){
        super(length);
        this.width = width;
    }

    @Override
    public double getArea() {
        return length*width;
    }

    @Override
    public double getPerimeter() {
        return 2*(length+width);
    }
}

class Circle extends Shape {
    double r;
    Circle(double rr){
        this.r = rr;
    }

    @Override
    public double getPerimeter() {
        return 2*Math.PI*r;
    }

    @Override
    public double getArea() {
        return Math.PI*r*r;
    }
}

    137 - 学生、大学生、研究生类-2

    Description

    修改题目125（学生类-本科生类-研究生类）
为学生类添加属性成绩，添加相应的get和set函数，添加函数getGrade()表示获得等级，该函数应当为抽象函数。
本科生和研究生的等级计算方式不同，如下所示

本科生标准   研究生标准
[80--100) A [90--100) A
[70--80) B  [80--90) B
[60--70) C  [70--80) C
[50--60) D  [60--70) D
50 以下   E   60 以下   E

main函数中构造两个学生Student变量，分别指向本科生和研究生对象，调用getGrade()方法输出等级

    Input

    本科生类信息，学号、姓名、性别、专业、成绩
研究生类信息，学号、姓名、性别、专业、导师、成绩

    Output

    本科生等级
研究生等级

    Sample Input

    2 chen female cs 90
3 li male sc wang 80

    Sample Output

    A
B

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Student s1,s2;
        Scanner scan = new Scanner(System.in);
        int no = scan.nextInt();
        String name = scan.next();
        String sex = scan.next();
        String major = scan.next();
        int score = scan.nextInt();
        s1 = new CollegeStudent(no, name, sex, major,score);

        no = scan.nextInt();
        name = scan.next();
        sex = scan.next();
        major = scan.next();
        String supervisor = scan.next();
        score = scan.nextInt();
        s2 = new GraduateStudent(no, name, sex, major, supervisor, score);

        s1.getGrade();
        s2.getGrade();

        scan.close();
    }
}

abstract class Student {
    int no;
    String name;
    String sex;
    int score;
    Student(int no, String name, String sex, int score){
        this.name = name;
        this.no = no;
        this.sex = sex;
        this.score = score;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

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

    public void setNo(int no) {
        this.no = no;
    }

    public int getNo() {
        return no;
    }

    public String getName() {
        return name;
    }

    public String getSex() {
        return sex;
    }

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    public void print(){
        System.out.println("no: "+getNo());
        System.out.println("name: "+getName());
        System.out.println("sex: "+getSex());
    }
    public abstract void getGrade();
}

class CollegeStudent extends Student {
    String major;
    CollegeStudent(int no, String name, String sex, String major, int score){
        super(no,name,sex,score);
        this.major = major;
    }

    public String getMajor() {
        return major;
    }

    public void setMajor(String major) {
        this.major = major;
    }

    public void print(){
        super.print();
        System.out.println("major: "+major);
    }

    public void getGrade(){
        if(score>=80){
            System.out.println("A");
        }else if(score>=70){
            System.out.println("B");
        }else if(score>=60){
            System.out.println("C");
        }else if(score>=50){
            System.out.println("D");
        }else{
            System.out.println("E");
        }

    }
}


class GraduateStudent extends CollegeStudent {
    String supervisor;

    GraduateStudent(int no, String name, String sex, String major, String supervisor, int score) {
        super(no, name, sex, major, score);
        this.supervisor = supervisor;
    }

    public String getSupervisor() {
        return supervisor;
    }

    public void setSupervisor(String supervisor) {
        this.supervisor = supervisor;
    }

    public void print() {
        super.print();
        System.out.println("supervisor: " + supervisor);
    }

    public void doResearch() {
        System.out.println(getName() + " is doing research");
    }

    public void getGrade() {
        if (score >= 90) {
            System.out.println("A");
        } else if (score >= 80) {
            System.out.println("B");
        } else if (score >= 70) {
            System.out.println("C");
        } else if (score >= 60) {
            System.out.println("D");
        } else {
            System.out.println("E");
        }
    }
}

    138 - 打球过程

    Description

    利用模板方法来构造相关类实现下述过程：
各种球类的玩法虽然不同，但是球类比赛的过程是类似的，都包含如下几个步骤：
1球员报道-->2比赛开始-->3比赛-->4比赛结束-->5公布比赛成绩，且其中1 2 4步相同 第3步根据球类不同，玩法不同，第5步根据得分不同，公布方式结果不同
构造类BallMatch表示球类比赛，包含方法compete表示真个比赛过程
构造各个比赛过程的函数checkin,start,play,end,annouceResult
打印信息如下：
now checking in
now starting
now playing football
now ending
now annoucing result: 2-3
构造类FootballMatch和BasketBallMatch，实现具体的比赛过程。

在main函数中，读入整数i，如果为1，则构造一个足球比赛过程，如果为2则构造一个篮球比赛过程
打印比赛过程

    Input

    比赛类型 比分

    Output

    比赛过程信息

    Sample Input

    1 2-3

    Sample Output

    now checking in
now starting
now playing football
now ending
now annoucing result: 2-3

    HINT

    MyAnswer

    import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        BallMatch bm;
        int i;
        Scanner scan = new Scanner(System.in);
        i = scan.nextInt();
        String score = scan.next();
        switch (i){
            case 1:
                bm = new FootballMatch(score);
                bm.compete(score);
                break;
            case 2:
                bm = new BasketBallMatch(score);
                bm.compete(score);
                break;
        }
    }
}

abstract class BallMatch{
    public final void compete(String res){
        checkin();
        start();
        play();
        end();
        annouceResult(res);
    }
    public void checkin(){
        System.out.println("now checking in");
    }
    public void start(){
        System.out.println("now starting");
    }
    public abstract void play();
    public void end(){
        System.out.println("now ending");
    }
    public void annouceResult(String result){
        System.out.println("now annoucing result: "+result);
    }
}

class FootballMatch extends BallMatch{
    String result;
    FootballMatch(String res){
        this.result = res;
    }
    public void play(){
        System.out.println("now playing football");
    }
}

class BasketBallMatch extends BallMatch{
    String result;
    BasketBallMatch(String res){
        this.result = res;
    }
    public void play(){
        System.out.println("now playing basketball");
    }
}

    相关文章

      网友评论

          本文标题：Java OJ 作业3

          本文链接：https://www.haomeiwen.com/subject/xcsvoftx.html

          延伸阅读

          深度阅读

          • 您也可以注册成为美文阅读网的作者，发表您的原创作品、分享您的心情！

          栏目导航

          热点阅读

          关于我们|服务条款|联系我们|Java OJ 作业3|投稿指南|网站地图|RSS订阅|排版工具|手机版

          提供经典美文摘抄,优美散文欣赏,现代诗歌精选,短篇小说,心情随笔,表白情书范文,故事会在线阅读欣赏

          Copyright © 2014-2023 Haomeiwen.com All Rights Reserved. 好美文阅读网 版权所有

          备案信息：桂公网安备 45052102000051号 · 桂ICP备13007215号-3

          本站所收录作品、热点评论等信息部分来源互联网，目的只是为了系统归纳学习和传递资讯

          所有作品版权归原创作者所有，与本站立场无关，如不慎侵犯了你的权益，请联系我们告知，我们将做删除处理！