我想能够比较两个漫画的收视率，但我不知道怎么做，所以我可以输入两个标题，然后抓取分数进行比较

Question

我在一个数组列表中设置了10个不同漫画的数据，它们分别是标题、评级、进行中与否，以及章节数量。我想能够输入两个不同的漫画标题到扫描仪，然后让它比较两个评分，看看哪个更高。这是我目前掌握的代码。提前谢谢你的帮助。

public class TopMangaData {

private String title;
private double rating;
private boolean onGoing;
private int chapters;

public TopMangaData(String title, double rating, boolean onGoing, int chapters) {
    this.title = title;
    this.rating = rating;
    this.onGoing = onGoing;
    this.chapters = chapters;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public double getRating() {
    return rating;
}

public void setRating(double rating) {
    this.rating = rating;
}

public boolean getOnGoing() {
    return onGoing;
}

public void setOnGoing(boolean onGoing) {
    this.onGoing = onGoing;
}

public int getChapters() {
    return chapters;
}

public void setChapters(int chapters) {
    this.chapters = chapters;
}

public String toString() {
    return "\nTop Manga Data \nTitle: " + title + "\nRating: " + rating + "\nOn going: " + onGoing + "\nChapters: " + chapters;
}

}

import java.util.ArrayList;

导入java。util。扫描仪；

公共类TopMangAdatarRunner{public static void main（字符串[]args）{

    ArrayList<TopMangaData> TopMangaData = new ArrayList<TopMangaData>(10); {
        TopMangaData.add(new TopMangaData("Berserk", 9.43, false, 380));
        TopMangaData.add(new TopMangaData("JoJo's Bizarre Adventure Part 7: Steel Ball Run", 9.27, false, 96));
        TopMangaData.add(new TopMangaData("One Piece", 9.17, true, 1041));
        TopMangaData.add(new TopMangaData("Vagabond", 9.16, false, 327));
        TopMangaData.add(new TopMangaData("Monster", 9.12, false, 162));
        TopMangaData.add(new TopMangaData("Fullmetal Alchemist", 9.07, false, 116));
        TopMangaData.add(new TopMangaData("Grand Blue", 9.06, true, 75));
        TopMangaData.add(new TopMangaData("Goodnight Punpun", 9.05, false, 147));
        TopMangaData.add(new TopMangaData("Slam Dunk", 9.04, false, 276));
        TopMangaData.add(new TopMangaData("Vinland Saga", 8.99, true, 190));
        
        for(TopMangaData m :TopMangaData) {
            System.out.println(m.toString());
        }
        Scanner scan = new Scanner(System.in);
        
        String firstComparison;
        String secondComparison;
        
        System.out.println("");
        System.out.println("Want to compare two of these top manga's scores?");
        System.out.println("Input the first manga you would like to compare:");
        
        firstComparison = scan.nextLine();
        
        System.out.println("Input the second manga you would like to compare:");
        
        secondComparison = scan.nextLine();
        
        

        
        }
            
    }

}

Answer 1

首先，您需要从列表中找到要比较的对象。最简单的方法是反复浏览列表并检查标题（假设标题在列表中）：

int firstComparisonValue = 0;
for(TopMangaData m :TopMangaData)
        if(m.getTitle().equals(firstComparison))
            firstComparisonValue = m.getRating();

int secondComparisonValue = 0;
for(TopMangaData m :TopMangaData)
        if(m.getTitle().equals(secondComparison))
            secondComparisonValue = m.getRating();

然后比较你的数值，打印出大数值的标题

if(firstComparisonValue > secondComparisonValue){
   System.out.println("First manga has higher rating")
}
else if (firstComparisonValue < secondComparisonValue){
   System.out.println("Second manga has higher rating")
}
else {
   System.out.println("Both have the same rating!")
}