Java根据特定列更改数组元素的顺序

import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;

public class ArraySortExample {
    public static void main(String[] args) {
        // 创建包含待排序元素的数组
        Person[] people = new Person[3];
        people[0] = new Person("Alice", 25);
        people[1] = new Person("Bob", 30);
        people[2] = new Person("Charlie", 20);

        // 创建比较器，根据特定列的值进行比较
        Comparator<Person> ageComparator = Comparator.comparing(Person::getAge);

        // 根据特定列排序数组
        Arrays.sort(people, ageComparator);

        // 输出排序结果
        for (Person person : people) {
            System.out.println(person.getName() + " - " + person.getAge());
        }

        // 更改数组元素的顺序
        Collections.reverse(Arrays.asList(people));

        // 输出逆序结果
        for (Person person : people) {
            System.out.println(person.getName() + " - " + person.getAge());
        }
    }

    static class Person {
        private String name;
        private int age;

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

        public String getName() {
            return name;
        }

        public int getAge() {
            return age;
        }
    }
}