import java.util.Scanner;
public class Main{
    public static void main(String args[]){
        Scanner s=new Scanner(System.in);
        double x1,y1,x2,y2;
        String color;
        x1=s.nextDouble();
        y1=s.nextDouble();
        x2=s.nextDouble();
        y2=s.nextDouble();
        color=s.nextLine();
        if(x1<0||x1>200||x2<0||x2>200||y1<0||y1>200||y2<0||y2>200){
            System.out.println("Wrong Format");
             System.exit(0);
        }
           
        color=s.nextLine();
        Point p1=new Point(x1,y1);
        Point p2=new Point(x2,y2);
        Line l1=new Line(p1,p2,color);
        l1.display();
}
}
class Point{
    private double x;
    private double y;
    Point(){
        
    }
    Point(double x,double y){
        setX(x);
        setY(y);
    }
    public double getX(){
        return x;
    }
    public void setX(double x){
        this.x=x;
    }
    public double getY(){
        return y;
    }
    public void setY(double y){
        this.y=y;
    }
    public void display(){//只打印点坐标
        System.out.println("("+String.format("%.2f",getX( ))+","+String.format("%.2f",getY())+")");
    }
}
class Line{
    Point point1;
    Point point2;
    String color;
    
    Line(){
        
    }
    Line(Point p1,Point p2,String color){
        setPoint1(p1);
        setPoint2(p2);
        setColor(color);
    }
    public Point getPoint1(){
        return point1;
    }
    public void setPoint1(Point point1){
        this.point1=point1;
    }
    public Point getPoint2(){
        return point2;
    }
    public void setPoint2(Point point2){
         this.point2=point2;
    }
     public String getColor(){
         return color;
     }   
    public void setColor(String color){
        this.color=color;
    }
    public double getDistance() {
        return Math.sqrt(Math.pow(
                (getPoint2().getY() - getPoint1().getY()),2) + Math.pow((getPoint2().getX() - getPoint1().getX()), 2));
    }
    public void display(){
         System.out.println("The line's color is:"+getColor());
        System.out.println("The line's begin point's Coordinate is:");
        point1.display();
        System.out.println("The line's end point's Coordinate is:");
        point2.display();
        System.out.println("The line's length is:"+String.format("%.2f", getDistance()));
    }
    }

import java.util.Scanner;

public class Main {
    public static void main(String args[]) {
        Scanner s = new Scanner(System.in);
        double x1, y1, x2, y2;
        String color;
        x1 = s.nextDouble();
        y1 = s.nextDouble();
        x2 = s.nextDouble();
        y2 = s.nextDouble();
        color = s.nextLine();
        if (x1 < 0 || x1 > 200 || x2 < 0 || x2 > 200 || y1 < 0 || y1 > 200 || y2 < 0 || y2 > 200) {
            System.out.println("Wrong Format");
            System.exit(0);
        }

        color = s.nextLine();
        Point p1 = new Point(x1, y1);
        Point p2 = new Point(x2, y2);
        Line l1 = new Line(p1, p2, color);
        Plane c1 = new Plane(color);
        Element element = new Element();
        element = p1;// 起点Point
        element.display();

        element = p2;// 终点Point
        element.display();

        element = l1;// 线段
        element.display();

        element = c1;// 面
        element.display();

    }
}

class Point extends Element {
    private double x;
    private double y;

    Point() {

    }

    Point(double x, double y) {
        setX(x);
        setY(y);
    }

    public double getX() {
        return x;
    }

    public void setX(double x) {
        this.x = x;
    }

    public double getY() {
        return y;
    }

    public void setY(double y) {
        this.y = y;
    }

    public void display() {// 只打印点坐标
        System.out.println("(" + String.format("%.2f", getX()) + "," + String.format("%.2f", getY()) + ")");
    }
}

class Line extends Element {
    Point point1;
    Point point2;
    String color;

    Line() {

    }

    Line(Point p1, Point p2, String color) {
        setPoint1(p1);
        setPoint2(p2);
        setColor(color);
    }

    public Point getPoint1() {
        return point1;
    }

    public void setPoint1(Point point1) {
        this.point1 = point1;
    }

    public Point getPoint2() {
        return point2;
    }

    public void setPoint2(Point point2) {
        this.point2 = point2;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public double getDistance() {
        return Math.sqrt(Math.pow((getPoint2().getY() - getPoint1().getY()), 2)
                + Math.pow((getPoint2().getX() - getPoint1().getX()), 2));
    }

    public void display() {
        System.out.println("The line's color is:" + getColor());
        System.out.println("The line's begin point's Coordinate is:");
        point1.display();
        System.out.println("The line's end point's Coordinate is:");
        point2.display();
        System.out.println("The line's length is:" + String.format("%.2f", getDistance()));
    }
}

class Element {
    public void display() {

    }
}

class Plane extends Element {
    private String color;

    Plane() {

    }

    Plane(String color) {
        setColor(color);
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public void display() {
        System.out.println("The Plane's color is:" + getColor());
    }
}

import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    public static void main(String args[]) {
        Scanner s = new Scanner(System.in);
        double x1, y1, x2, y2;
        int i = 0;
        String color;

        Element element = new Element();

        int choice = s.nextInt();
        GeometryObject g = new GeometryObject();
        while (choice != 0) {
            switch (choice) {
            case 1:// insert Point object into list
                x1 = s.nextDouble();
                y1 = s.nextDouble();
                if (x1 < 0 || x1 > 200 || y1 < 0 || y1 > 200) {
                    System.out.println("Wrong Format");
                    System.exit(0);
                }
                Point p1 = new Point(x1, y1);
                g.add(p1);
                element = p1;
                //element.display();
                break;
            case 2:// insert Line object into list
                x1 = s.nextDouble();
                y1 = s.nextDouble();
                x2 = s.nextDouble();
                y2 = s.nextDouble();
                if (x1 < 0 || x1 > 200 || x2 < 0 || x2 > 200 || y1 < 0 || y1 > 200 || y2 < 0 || y2 > 200) {
                    System.out.println("Wrong Format");
                    System.exit(0);
                }
                Point p0 = new Point(x1, y1);
                Point p2 = new Point(x2, y2);
                color = s.next();
                Line l1 = new Line(p0, p2, color);
                element = l1;// 线段
                //element.display();
                g.add(l1);
                break;
            case 3:// insert Plane object into list
                color = s.next();
                Plane c1 = new Plane(color);
                element = c1;// 面
                i++;
                if (i > 1)
                    //element.display();
                g.add(c1);
                break;
            case 4:// delete index - 1 object from list
                int index = s.nextInt();
                g.remove(index);

            }
            choice = s.nextInt();
        }
        g.getList();
    }
}

class Point extends Element {
    private double x;
    private double y;

    Point() {

    }

    Point(double x, double y) {
        setX(x);
        setY(y);
    }

    public double getX() {
        return x;
    }

    public void setX(double x) {
        this.x = x;
    }

    public double getY() {
        return y;
    }

    public void setY(double y) {
        this.y = y;
    }

    public void display() {// 只打印点坐标
        System.out.println("(" + String.format("%.2f", getX()) + "," + String.format("%.2f", getY()) + ")");
    }
}

class Line extends Element {
    Point point1;
    Point point2;
    String color;

    Line() {

    }

    Line(Point p1, Point p2, String color) {
        setPoint1(p1);
        setPoint2(p2);
        setColor(color);
    }

    public Point getPoint1() {
        return point1;
    }

    public void setPoint1(Point point1) {
        this.point1 = point1;
    }

    public Point getPoint2() {
        return point2;
    }

    public void setPoint2(Point point2) {
        this.point2 = point2;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public double getDistance() {
        return Math.sqrt(Math.pow((getPoint2().getY() - getPoint1().getY()), 2)
                + Math.pow((getPoint2().getX() - getPoint1().getX()), 2));
    }

    public void display() {
        System.out.println("The line's color is:" + getColor());
        System.out.println("The line's begin point's Coordinate is:");
        point1.display();
        System.out.println("The line's end point's Coordinate is:");
        point2.display();
        System.out.println("The line's length is:" + String.format("%.2f", getDistance()));
    }
}

class Element {
    public void display() {

    }
}

class Plane extends Element {
    private String color;

    Plane() {

    }

    Plane(String color) {
        setColor(color);
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public void display() {
        System.out.println("The Plane's color is:" + getColor());
    }
}

class GeometryObject {
    private ArrayList<Element> list = new ArrayList<Element>();

    GeometryObject() {
    }

    public void add(Element element) {
        list.add(element);
    }

    public void remove(int index) {
        list.remove(index - 1);
    }
   void getList() {
        for (Element e : list) {
            e.display();
        }
   }
    

}

package zou;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Student member[] = new Student[30];
        Student insert_student = new Student();
        int total = 0;
        float hightest = 0, s_hightest = 0;
        String[] random_name = { "Elina", "Doris", "Jerry", "Sendy", "Sara", "John", "Gaylyn", "Vivian", "Nancy",
                "Emma", "Bella", "Lily", "Selina", "Karen", "Kate", "Anne", "Bob", "Kiki", "Jojo", "Dio", "Lala",
                "Zara", "Nike", "Mike", "Sia", "Juju", "Mama", "Kaka", "Bongbong", "sb" };
        for (int i = 0; i < 30; i++) {
            member[i] = new Student();
            member[i].student_Name = random_name[i];
            if (i < 10)
                member[i].student_ID = "2120110" + (i + 1);
            else
                member[i].student_ID = "212011" + (i + 1);
            for (int j = 0; j < 4; j++) {
                member[i].scores[j] = (int) (Math.random() * 100 + 1);
                total += member[i].scores[j];
                if (member[i].scores[j] > hightest) {
                    hightest = member[i].scores[j];
                }
            }
            member[i].Average_score = total / 4;
            member[i].Hightest_score = hightest;
            total = 0;
        }
        total = 0;
        hightest = 0;
        int correct = 0;
        Scanner s = new Scanner(System.in);
        System.out.print("请输入学生姓名：");
        insert_student.student_Name = s.next();
        System.out.println("请输入学生学号：");
        insert_student.student_ID = s.next();
        System.out.println("请输入四门课的成绩，以空格分隔：");
        for (int j = 0; j < 4; j++) {
            insert_student.scores[j] = s.nextInt();
            if (insert_student.scores[j] > 100)
                correct = 1;
            total += insert_student.scores[j];
            if (insert_student.scores[j] > hightest) {
                hightest = insert_student.scores[j];
            }
        }
        s.close();
        insert_student.Average_score = total / 4;
        insert_student.Hightest_score = hightest;

        int k, sd = 0;
        for (k = 0; k < 30; k++) {
            if (member[k].Average_score > s_hightest) {
                s_hightest = member[k].Average_score;
                sd = k;
            }
        }
        if (correct == 1)
            System.out.println("课程成绩不能高于100分");
        else {
            System.out.println(insert_student.student_Name + "(ID:" + insert_student.student_ID + ") 平均分"
                    + insert_student.Average_score + " 最高分" + insert_student.Hightest_score);
            if (insert_student.Average_score == 100)
                System.out.println(insert_student.student_Name + "现在是班上成绩最好的学生了");
            else
                System.out.println(member[sd].student_Name + "(ID:" + member[sd].student_ID + ") 平均分" + s_hightest
                        + " 最高分" + member[sd].Hightest_score);
            if (insert_student.Average_score > s_hightest)
                System.out.print(insert_student.student_Name + "的平均成绩高于全班的平均分");
            else
                System.out.print(insert_student.student_Name + "的平均成绩低于全班的平均分");
        }
    }
}

class Student {
    String student_ID;// 学生学号

    String student_Name;// 学生姓名
    int[] scores = new int[4];// 学生成绩
    float Average_score;
    float Hightest_score;
}