package?com.imooc.collection;

import?java.util.ArrayList;
import?java.util.Collections;
import?java.util.List;
import?java.util.Random;

/**
?*?將要完成：
?*?1.通過(guò)Collections.sort()方法，對(duì)Integer泛型的List進(jìn)行排序；
?*?2.對(duì)String泛型的List進(jìn)行排序；
?*?3.對(duì)其他類型泛型的List進(jìn)行排序，以Student為例。
?*/

public?class?CollectionsTest?{

????/**
?????*?1.通過(guò)Collections.sort()方法，對(duì)Integer泛型的List進(jìn)行排序；
?????*?創(chuàng)建一個(gè)Integer泛型的List，插入十個(gè)100以內(nèi)的不重復(fù)隨機(jī)整數(shù)
?????*?調(diào)用Collections.sort()方法對(duì)其進(jìn)行排序
?????*/
????public?void?testSort1(){
????????List<Integer>integerList?=?new?ArrayList<Integer>();
????????//插入十個(gè)100以內(nèi)的不重復(fù)隨機(jī)整數(shù)
????????Random?random?=?new?Random();
????????Integer?k;
????????for?(int?i=0;i<10;i++){
????????????do?{
????????????????k?=?random.nextInt(100);
????????????}while?(integerList.contains(k));
????????????integerList.add(k);
????????????System.out.println("成功添加整數(shù):"+k);
????????}
????????System.out.println("----------排序前----------");
????????for?(Integer?integer:integerList){
????????????System.out.println("元素:"+integer);
????????}
????????Collections.sort(integerList);
????????System.out.println("----------排序后-----------");
????????for?(Integer?integer:integerList){
????????????System.out.println("元素:"+integer);
????????}
????}

????/**
?????*?2.對(duì)String泛型的List進(jìn)行排序；
?????*?創(chuàng)建String泛型的List，添加三個(gè)亂序的String元素，
?????*?調(diào)用sort方法，再次輸出排序后的順序
?????*/
????public?void?testSort2(){
????????List<String>?stringList?=?new?ArrayList<String?>();
????????stringList.add("microsoft");
????????stringList.add("google");
????????stringList.add("lenovo");
????????System.out.println("--------排序前--------");
????????for?(String?string:stringList){
????????????System.out.println("元素:"+string);
????????}
????????Collections.sort(stringList);
????????System.out.println("--------排序后--------");
????????for?(String?string:stringList){
????????????System.out.println("元素:"+string);
????????}
????}

????public?void?testSort3(){
????????List<Student>?studentList?=?new?ArrayList<Student>();
????????Random?random?=?new?Random();
????????studentList.add(new?Student(random.nextInt(1000)+"",",Mike"));
????????studentList.add(new?Student(random.nextInt(1000)+"","Angela"));
????????studentList.add(new?Student(random.nextInt(1000)+"","Lucy"));
????????System.out.println("--------排序前-------");
????????for?(Student?student:studentList){
????????????System.out.println("學(xué)生:"+student.id+":"+student);
????????}
????????Collections.sort(studentList);
????????System.out.println("--------排序后-------");
????}

????public?static?void?main(String[]?args)?{
????????CollectionsTest?ct?=?new?CollectionsTest();
//????????ct.testSort1();
//????????ct.testSort2();
????????ct.testSort3();
????}

}