**
7-1 graphic card sorting game (40 points)
**
Master the inheritance of classes, the use of polymorphism and the application of interfaces. See [operation instruction] for details Operation instruction v1.07-2020 0.pdf
Input format:
First, input a string of numbers (1 ~ 4, integers) on one line, where 1 represents circular card, 2 represents rectangular card, 3 represents triangular card and 4 represents trapezoidal card. Numbers are separated by one or more spaces and end with "0". For example: 1 3 4 2 1 3 4 2 1 3 0
Then, according to the card graphic type represented by the first line of numbers, input the relevant parameters of each graphic in turn. For example, the radius of the circle needs to be input for the circular card, the width and length of the rectangle need to be input for the rectangular card, the length of three sides of the triangle needs to be input for the triangular card, and the upper bottom, lower bottom and height of the trapezoid need to be input for the trapezoid. The data is separated by one or more spaces.
Output format:
If the number of graphics is illegal (less than 0) or the value of graphics attribute is illegal (the value is less than 0 and the three sides of a triangle cannot form a triangle), Wrong Format is output.
If the input is legal, it will be output normally, and all values can be kept to two decimal places after calculation. The output contents are as follows:
The format of each graphic type and area before sorting is graphic name 1: area value 1, graphic name 2: area value 2... Graphic name n: area value n. note that each graphic output is separated by a space, and there is a space for separation at the end of the output;
The type and area of each figure after sorting are in the same format as the output before sorting;
The total area of all drawings, in the format of Sum of area: total area value.
shopping spree
1. Application of inheritance and polymorphism;
2. Application method of ArrayList generics
3. Application of comparable interface and generics
4. Application of the principle of single responsibility
5. Application of "open close" principle
Input example 1:
1 5 3 2 0
Output example 1:
Wrong Format
Input example 2:
4 2 1 3 0
3.2 2.5 0.4 2.3 1.4 5.6 2.3 4.2 3.5
Output example 2:
The original list: Trapezoid:1.14 Rectangle:3.22 Circle:98.52
Triangle:4.02 The sorted list: Circle:98.52 Triangle:4.02
Rectangle:3.22 Trapezoid:1.14 Sum of area:106.91
Input example 3:
4 2 1 3 0
3.2 2.5 0.4 2.3 1.4 5.6 2.3 4.2 8.4
Output example 3:
Wrong Format
import java.util.Scanner;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.TreeSet;
//Chulishuju class
class Chulishuju{
ArrayList<Card> cardList=new ArrayList<>();//Storage side length
public Chulishuju(ArrayList<Integer> c){
for (Integer a:c){
if (a==0){
break;
}
else {
switch (a) {
case 1 -> {
Card a1 = new Card(new Circle(Main.x.nextDouble()));
cardList.add(a1);
a1.getShape().setName("Circle");
}
case 2 -> {
Card b1 = new Card(new Rectangle(Main.x.nextDouble(), Main.x.nextDouble()));
cardList.add(b1);
b1.getShape().setName("Rectangle");
}
case 3 -> {
Card c1 = new Card(new Triangle(Main.x.nextDouble(), Main.x.nextDouble(), Main.x.nextDouble()));
cardList.add(c1);
c1.getShape().setName("Triangle");
}
case 4 -> {
Card d1 = new Card(new Trapezoid(Main.x.nextDouble(), Main.x.nextDouble(), Main.x.nextDouble()));
cardList.add(d1);
d1.getShape().setName("Trapezoid");
}
}
}
}
}
public boolean pdsfhf(){//Judge whether the data is legal
boolean kp=true;
for (Card a:cardList){
if (!a.getShape().pdsfhf()){
kp=false;
break;
}
}
return kp;
}
public void cardSort(){//sort
TreeSet<Card> kp = new TreeSet<>(cardList);
for (Card a : kp) {
System.out.print(a.getShape());
}
}
public double getZmj(){//Calculated total area
double zmj=0;
for (Card a : cardList) {
zmj=zmj+a.getShape().Mj();
}
return zmj;
}
public void show(){//output
System.out.println("The original list:");
for (Card a : cardList) {
System.out.print(a.getShape());
}
System.out.println("\nThe sorted list:");
cardSort();
System.out.printf("\nSum of area:%.2f\n",getZmj());
}
}
//Card class
class Card implements Comparable<Card>{
private Shape shape;
//Create a parameterless construction method
public Card(){
}
//Create a construction method with parameters
public Card(Shape shape) {
this.shape = shape;
}
//getter
public Shape getShape() {
return shape;
}
//setter
public void setShape(Shape shape){
this.shape=shape;
}
public int compareTo(Card card) {
return -(int)(shape.Mj()-card.getShape().Mj());
}
}
//Shape class
abstract class Shape {
private String name;
//Create a parameterless construction method
public Shape() {
}
//Create a construction method with parameters
public Shape(String name) {
this.name = name;
}
//getter
public String getName() {
return name;
}
//setter
public void setName(String name) {
this.name = name;
}
//the measure of area
public abstract double Mj();
//Judge whether the data is legal
public abstract boolean pdsfhf();
public String toString() {
return getName()+":"+String.format("%.2f ",Mj());
}
}
//Circle class
class Circle extends Shape{
private double r;
//Create a parameterless construction method
public Circle(){
}
//Create a construction method with parameters
public Circle(double r){
this.r=r;
}
//getter
public double getR(){
return r;
}
//setter
public void setR(double r){
this.r = r;
}
//Judge whether the data is legal
public boolean pdsfhf() {
return r>0;
}
//Calculate circle area
public double Mj(){
return Math.PI*r*r;
}
}
//Rectangle class
class Rectangle extends Shape{
private double a,b;
//Create a parameterless construction method
public Rectangle(){
}
//Create a construction method with parameters
public Rectangle(double a, double b){
this.a=a;
this.b=b;
}
//getter
public double A(){
return a;
}
public double B(){
return b;
}
//setter
public void setA(double a){
this.a=a;
}
public void setB(double b){
this.b=b;
}
//Judge whether the data is legal
public boolean pdsfhf() {
return a>0&&b>0;
}
//Calculate rectangular area
public double Mj(){
return a*b;
}
}
//Triangle class
class Triangle extends Shape{
private double a;
private double b;
private double c;
//Create a parameterless construction method
public Triangle() {
}
//Create a construction method with parameters
public Triangle(double a, double b, double c){
this.a = a;
this.b = b;
this.c = c;
}
//getter
public double A(){
return a;
}
public double B(){
return b;
}
public double C(){
return c;
}
//setter
public void setA(double a){
this.a=a;
}
public void setB(double b){
this.b=b;
}
public void setC(double c){
this.c=c;
}
//Judge whether the data is legal
public boolean pdsfhf(){
Double[] bc=new Double[3];
bc[0]=a;bc[1]=b;bc[2]=c;
boolean z=true;
Arrays.sort(bc);
if(a<=0&&b<=0&&c<=0){
z=false;
}
else{
if(!(a+b>c)){
z=false;
}
}
return z;
}
//Calculate triangle area
public double Mj(){
double s1,s2;
s1=(a+b+c)/2;
s2=Math.sqrt(s1*(s1-a)*(s1-b)*(s1-c));
return s2;
}
}
//Tradezoid class
class Trapezoid extends Shape{
private double c,b,h;
//Create a parameterless construction method
public Trapezoid() {
}
//Create a construction method with parameters
public Trapezoid(double c, double b, double h) {
this.c = c;
this.b = b;
this.h = h;
}
//getter
public double C(){
return c;
}
public double B(){
return b;
}
public double H(){
return h;
}
//setter
public void setC(double a){
this.c=c;
}
public void setB(double b){
this.b=b;
}
public void setH(double c){
this.h=h;
}
//Judge whether the data is legal
public boolean pdsfhf() {
return b>0&&c>0&&h>0;
}
//Calculate trapezoidal area
public double Mj() {
return (c+b)*h/2;
}
}
//Main class
public class Main{
public static Scanner x = new Scanner(System.in);//Define a static Scanner object in the Main class, so that if you want to use this object for input in other classes, you can directly use Main input. next... Just enough (avoid pit)
public static void main(String[] args){
ArrayList<Integer> xzlist = new ArrayList<>();
int xz;
xz=x.nextInt();
while (xz!=0){//Loop in the first row of data
if(xz>4||xz<0){//If the input data is illegal
System.out.println("Wrong Format");
System.exit(0);
}
xzlist.add(xz);
xz=x.nextInt();
}
//Check whether the data is legal
Chulishuju chulishuju=new Chulishuju(xzlist);
if(!chulishuju.pdsfhf()){
System.out.println("Wrong Format");
System.exit(0);
}
chulishuju.show();
x.close();
}
}