软件设计-Tutorial18

package Tutorial18;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;

// 定义学生类
class Student {
    private String name;
    private String studentId;
    private int age;

    public Student(String name, String studentId, int age) {
        this.name = name;
        this.studentId = studentId;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public String getStudentId() {
        return studentId;
    }

    public int getAge() {
        return age;
    }
}

public class StudentInfoTraversal {
    public static void main(String[] args) {
        // 创建学生列表
        List<Student> students = new ArrayList<>();
        students.add(new Student("张三", "130501", 20));
        students.add(new Student("李四", "130502", 21));
        students.add(new Student("王五", "130503", 21));
        students.add(new Student("赵六", "130504", 21));
        students.add(new Student("mzd", "130505", 21));
        students.add(new Student("xxk", "130506", 21));
        students.add(new Student("qfy", "130507", 21));
        students.add(new Student("gyg", "130508", 21));
        students.add(new Student("czf", "130509", 21));
        // 可以继续添加更多学生信息

        // 按照学号从小到大排序并输出
        Collections.sort(students, new Comparator<Student>() {
            @Override
            public int compare(Student s1, Student s2) {
                return s1.getStudentId().compareTo(s2.getStudentId());
            }
        });
        System.out.println("按照学号从小到大输出学生信息：");
        Iterator<Student> ascendingIterator = students.iterator();
        while (ascendingIterator.hasNext()) {
            Student student = ascendingIterator.next();
            System.out.println("姓名：" + student.getName() + "，学号：" + student.getStudentId() + "，年龄：" + student.getAge());
        }

        // 按照学号从大到小排序并输出
        Collections.sort(students, new Comparator<Student>() {
            @Override
            public int compare(Student s1, Student s2) {
                return s2.getStudentId().compareTo(s1.getStudentId());
            }
        });
        System.out.println("按照学号从大到小输出学生信息：");
        Iterator<Student> descendingIterator = students.iterator();
        while (descendingIterator.hasNext()) {
            Student student = descendingIterator.next();
            System.out.println("姓名：" + student.getName() + "，学号：" + student.getStudentId() + "，年龄：" + student.getAge());
        }
    }
}

Cpp:
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>

// 定义学生结构体
struct Student {
    std::string name;
    std::string studentId;
    int age;

    Student(const std::string& name, const std::string& studentId, int age) :
        name(name), studentId(studentId), age(age) {}
};

// 比较函数，用于按照学号从小到大排序
bool compareAscending(const Student& s1, const Student& s2) {
    return s1.studentId < s2.studentId;
}

// 比较函数，用于按照学号从大到小排序
bool compareDescending(const Student& s1, const Student& s2) {
    return s1.studentId > s2.studentId;
}

int main() {
    // 创建学生向量
    std::vector<Student> students;
    students.push_back(Student("张三", "130501", 20));
    students.push_back(Student("李四", "130502", 21));
    students.push_back(Student("王五", "130503", 21));
    students.push_back(Student("赵六", "130504", 21));
    students.push_back(Student("mzd", "130505", 21));
    students.push_back(Student("xxk", "130506", 21));
    students.push_back(Student("qfy", "130507", 21));
    students.push_back(Student("gyg", "130508", 21));
    students.push_back(Student("czf", "130509", 21));
    // 可以继续添加更多学生信息
    // 按照学号从小到大排序并输出
    std::sort(students.begin(), students.end(), compareAscending);
    std::cout << "按照学号从小到大输出学生信息：" << std::endl;
    for (const auto& student : students) {
        std::cout << "姓名：" << student.name << "，学号：" << student.studentId << "，年龄：" << student.age << std::endl;
    }

    // 按照学号从大到小排序并输出
    std::sort(students.begin(), students.end(), compareDescending);
    std::cout << "按照学号从大到小输出学生信息：" << std::endl;
    for (const auto& student : students) {
        std::cout << "姓名：" << student.name << "，学号：" << student.studentId << "，年龄：" << student.age << std::endl;
    }

    return 0;
}