有一个学生类，属性是 名字，学号，分数
在学生管理类（主要是对学生类进行添加，删除，修改，显示，排序等功能）里面新建了一个链表，并把一个个的学生添加到链表中
问题是，怎么能按分数对学生进行排序？
麻烦大家指教。本人是才上路的，谢谢了。在线等。
------解决方案--------------------
- Java code
package com.qq.server;import java.util.Arrays;import java.util.LinkedList;public class Test2 { public static void main(String[] args) { LinkedList<Student> list = new LinkedList<Student>(); list.add(new Student(1,123)); list.add(new Student(2,113)); list.add(new Student(3,23)); list.add(new Student(4,84)); list.add(new Student(5,423)); list.add(new Student(6,33)); list.add(new Student(7,67)); Student[] tempArray = list.toArray(new Student[] {}); Arrays.sort(tempArray); for (int i = 0; i < tempArray.length; i++) { System.out.println(tempArray[i].toString()); } }}class Student implements Comparable { private Integer studentId; private double source; public double getSource() { return source; } public void setSource(double source) { this.source = source; } public Integer getStudentId() { return studentId; } public void setStudentId(Integer studentId) { this.studentId = studentId; } public Student() { } public Student(Integer studentId, double source) { this.setStudentId(studentId); this.setSource(source); } public int compareTo(Object stu2) { int returnInt = 0; if (this.getSource() - ((Student) stu2).getSource() > 0) { returnInt = 1; } else if (this.getSource() - ((Student) stu2).getSource() == 0) { returnInt = 0; } else { returnInt = -1; } return returnInt; } public String toString() { return this.getStudentId() + " --> " + this.getSource(); }}
------解决方案--------------------
- Java code
package test;import java.util.Arrays;public class MyTest { public static void main(String[] args) { Student s [] = new Student [4]; s[0] = new Student("aa","001",98); s[1] = new Student("bb","002",58); s[2] = new Student("cc","003",78); s[3] = new Student("dd","004",38); Arrays.sort(s); for(int i = 0; i<s.length; i++){ System.out.println(s[i]); } }}class Student implements Comparable<Student>{ private String name; private String no; private int score; public Student(String name,String no,int score){ this.name = name; this.no = no; this.score = score; } public int compareTo(Student o) { // TODO Auto-generated method stub if(this.score > o.score){ return 1; }else if(this.score < o.score){ return -1; }else{ return 0; } } public String toString(){ return "name:"+name+",no:"+no+",score:"+score; } }