package stream;

import reference.Student;

import java.util.Arrays;
import java.util.List;

/**
 * @author LiuYan
 * @date 2021年11月19日 8:32
 * 自然排序:Comparable 类内部自定义的排序(实现Comparable接口,重写CompareTo的方法定义排序规则)
 * 定制排序:Comparator 自定义排序规则(Collections.sort(new Comparator(){重写compare方法})或者Arrays.sort(new Comparator(){重写compare方法}))
 */
public class Part08 {

 public static void main(String[] args) {
 List<String> list = Arrays.asList("aaa", "ccc", "bbb", "ddd", "bbb");
 list.stream().sorted().forEach(System.out::println);

 List<Student> studentList = Arrays.asList(new Student(10, "zhangsan"),
 new Student(20, "lisi"),
 new Student(30, "wangwu"),
 new Student(40, "goudan"));
 studentList.stream().sorted((e1, e2) -> {
 if (e1.getAge().compareTo(e2.getAge()) == 0) {
 return e1.getName().compareTo(e2.getName());
 } else {
 return e1.getAge().compareTo(e2.getAge());
 }

 }).forEach(System.out::println);

 }


}