java题不会做 谁能帮帮我
发布网友
发布时间：2023-11-23 03:33
共1个回答
热心网友
时间：2024-03-02 22:46
参考一下吧：
import java.util.Random;
public class Test {
public static void main(String[] args) {
Book[] books = getBooks(10);
showMaxPriceBookInfo(books);
}
public static Book[] getBooks(int count) {
System.out.println("调用了getBooks");
Book[] books = new Book[count];
for (int i = 0; i < books.length; i++) {
Random rnd = new Random();
double price = Math.round(rnd.nextDouble() * 1000);
books[i] = new Book();
books[i].setAuthor("作者" + i);
books[i].setISBN("随机数-" + i);
books[i].setPrice(price / 10);
System.out.println("作者:" + books[i].getAuthor() + " ISBN:"
+ books[i].getISBN() + " 价格:" + books[i].getPrice());
}
return books;
}
public static void showMaxPriceBookInfo(Book[] books) {
if (null != books) {
double[] price = new double[books.length];
for (int i = 0; i < books.length; i++) {
price[i] = books[i].getPrice();
}
int index = 0;
double max = price[0];
for (int x = 1; x < price.length; x++){
if (price[x] > max){
max = price[x];
index = x;
}
}
System.out.println("价格最大的Book的信息为：");
System.out.println("作者:" + books[index].getAuthor() + " ISBN:"
+ books[index].getISBN() + " 价格:" + books[index].getPrice());
}
}
}
class Book {
private String author;// 作者
private String ISBN;// 书号
private double price;// 价格
public String getAuthor() {
return this.author;
} // 返回作者名
public void setAuthor(String author) {
this.author = author;
} // 设置作者名
public String getISBN() {
return this.ISBN;
} // 返回书号
public void setISBN(String ISBN) {
this.ISBN = ISBN;
}// 设置书号
public double getPrice() {
return this.price;
}// 返回书价
public void setPrice(double price) {
this.price = price;
}// 设置书价
}
--------------------------------------------------------------------------------------------
