qq_44789987的博客

1.建一个maven项目2.添加依赖<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifact

public static void main(String[] args) { List<Integer> list=new ArrayList<>(); Random random=new Random(); for(int i=0;i<20;i++){ list.add(random.nextInt(100)); } list.sort(null);//自然排序 .