要求可以根据每个学生的成绩进行由高到低的排序如果成绩相等则按照年龄由低到高排序数据的样式如下张三:19:90|李四:20:90|王五:20:80|赵六:21:100

要求可以根据每个学生的成绩进行由高到低的排序如果成绩相等则按照年龄由低到高排序

数据的样式如下张三:19:90|李四:20:90|王五:20:80|赵六:21:100

import java.util.Arrays;public class Test03_Student {/** * 要求可以根据每个学生的成绩进行由高到低的排序 * 如果成绩相等 * 则按照年龄由低到高排序 * 数据的样式如下 * 张三:19:90|李四:20:90|王五:20:80|赵六:21:100 */public static void main(String[] args) {String a="A";String b="B";mb_operate(a,b);System.out.println(a+"."+b);// TODO Auto-generated method stubString content = "张三:19:90#李四:20:90#王五:20:80#赵六:21:100";String[] ss = content.split("#");Student[] stus = new Student[ss.length];for (int i = 0; i < ss.length; i++) {String[] temp = ss[i].split(":");stus[i] = new Student(temp[0],Integer.valueOf(temp[1]), Integer.valueOf(temp[2]));}//排序Arrays.sort(stus);for (Student student : stus) {System.out.println(student);}}public static void mb_operate(String x,String y){x.concat(y);y=x;}}class Student implements Comparable<Student>{private String name;private int age;private int score;public Student() {}public Student(String name, int age, int score) {this.name = name;this.age = age;this.score = score;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public int getScore() {return score;}public void setScore(int score) {this.score = score;}@Overridepublic String toString() {return "Student [name=" + name + ", age=" + age + ", score=" + score + "]";}@Overridepublic int compareTo(Student o) {if(this.getScore() > o.getScore()){return 1;}else if(this.getScore() < o.getScore()){return -1;}else{if(this.getAge() > o.getAge()){return 1;}else if(this.getAge() < o.getAge()){return -1;}return 0;}}}