package collection;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Random;

import java.util.UUID;

public class collectionTest {

????public void testSort3() {

????????List<String> stList = new ArrayList<String>();

????????Random random = new Random();

????????String randomStr;

????????for(int i=0;i<10;i++) {

????????????int R = random.nextInt(10);

????????????do {

????????????????randomStr = UUID.randomUUID().toString().substring(0, R);

?????????????}while(stList.contains(randomStr));

????????????stList.add(randomStr);

????????????System.out.println("將要添加字符串:"+randomStr);

????????}

????????System.out.println("-----排序前-----");

????????for(String s:stList) {

????????????System.out.println("元素:"+s);

????????}

????????Collections.sort(stList);

????????System.out.println("-----排序后-----");

????????for(String s:stList) {

????????????System.out.println("元素:"+s);

????????}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

collectionTest ct = new collectionTest();

// ct.testSort1();

// ct.testSort2();?

ct.testSort3();

}