对数组中两个最高的数字进行排序

Question

我很遗憾地问,但我在书中练习时遇到了麻烦,而且我不确定如何修复它.输入学生的姓名和分数后,我会找到最高和第二高分.但是我找不到找到两个最高分的正确方法.

我使用的当前方式有效,但是用户输入的分数从低到高,例如70,80和90.如果完成了90,80和70,它会对数字进行适当的排序.

有什么我可以改变/做/读让我走上正确的道路吗？

import java.util.Scanner;

public class StudentSort {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        // For finding highest scores with corresponding array
        double firstHighest = 0;
        int firstEntry = 0;
        double secondHighest = 0;
        int secondEntry = 0;

        System.out.print("Enter the number of students: ");
        int studentCount = input.nextInt();

        // Length of arrays set
        int[] studentScores = new int[studentCount];
        String[] studentName = new String[studentCount];

        // Go through loop to set scores and names of each student
        for (int i = 0; i < studentCount; i++) {
            System.out.print("Enter a student name: ");
            studentName[i] = input.next();
            System.out.print("Enter a student score: ");
            studentScores[i] = input.nextInt();
            }

        // Find out the highest and second highest scores
        // Problem with secondHighest/Entry
        for (int i = 0; i < studentScores.length; i++) {
            if (studentScores[i] > firstHighest) {
                secondHighest = firstHighest;
                firstHighest = studentScores[i];
                firstEntry = i;
        } else if (studentScores[i] > secondHighest) {
                secondHighest = studentScores[i];
                secondEntry = i;
        }
    }

    System.out.println("Top two students: ");
    System.out.println(studentName[firstEntry] + "'s score is " + firstHighest);
    System.out.println(studentName[secondEntry] + "'s score is " + secondHighest);
    }
}

一如既往,感谢您提供的任何帮助.

Answer 1

secondEntry当您获得新的最高分时,您似乎忘了更新.行前:

            firstEntry = i;

尝试添加:

            secondEntry = firstEntry;