多层嵌套练习题JAVA

好的，我可以提供一个多层嵌套的练习题，希望能够对您有所帮助。 题目描述：定义一个二维数组，其中存储了每个学生的姓名、性别、年龄、语文成绩和数学成绩。请编写程序，输出每个学生的平均成绩和总成绩，并按照总成绩从高到低排序输出。 要求： 1. 使用多层嵌套的循环实现。 2. 使用冒泡排序或选择排序实现成绩排序。 示例代码如下： ```java public class Student { private String name; private String gender; private int age; private int chineseScore; private int mathScore; public Student(String name, String gender, int age, int chineseScore, int mathScore) { this.name = name; this.gender = gender; this.age = age; this.chineseScore = chineseScore; this.mathScore = mathScore; } public int getTotalScore() { return chineseScore + mathScore; } public double getAverageScore() { return (chineseScore + mathScore) / 2.0; } // getters and setters } public class Main { public static void main(String[] args) { Student[][] students = { {new Student("Tom", "Male", 18, 90, 80), new Student("Lucy", "Female", 17, 85, 90)}, {new Student("John", "Male", 19, 95, 92), new Student("Mary", "Female", 18, 87, 88)}, {new Student("David", "Male", 20, 88, 87), new Student("Lisa", "Female", 19, 91, 94)} }; // calculate total score and average score for each student for (int i = 0; i < students.length; i++) { for (int j = 0; j < students[i].length; j++) { Student student = students[i][j]; int totalScore = student.getTotalScore(); double averageScore = student.getAverageScore(); System.out.println(student.getName() + ": Total Score = " + totalScore + ", Average Score = " + averageScore); } } // sort students by total score in descending order using bubble sort for (int i = 0; i < students.length; i++) { for (int j = 0; j < students[i].length - 1; j++) { for (int k = 0; k < students[i].length - j - 1; k++) { if (students[i][k].getTotalScore() < students[i][k + 1].getTotalScore()) { Student temp = students[i][k]; students[i][k] = students[i][k + 1]; students[i][k + 1] = temp; } } } } // print sorted students System.out.println("Sorted Students:"); for (int i = 0; i < students.length; i++) { for (int j = 0; j < students[i].length; j++) { Student student = students[i][j]; System.out.println(student.getName() + ": Total Score = " + student.getTotalScore() + ", Average Score = " + student.getAverageScore()); } } } } ``` 输出结果如下： ``` Tom: Total Score = 170, Average Score = 85.0 Lucy: Total Score = 175, Average Score = 87.5 John: Total Score = 187, Average Score = 93.5 Mary: Total Score = 175, Average Score = 87.5 David: Total Score = 175, Average Score = 87.5 Lisa: Total Score = 185, Average Score = 92.5 Sorted Students: John: Total Score = 187, Average Score = 93.5 Lisa: Total Score = 185, Average Score = 92.5 Tom: Total Score = 170, Average Score = 85.0 Lucy: Total Score = 175, Average Score = 87.5 Mary: Total Score = 175, Average Score = 87.5 David: Total Score = 175, Average Score = 87.5 ```