Java中对List集合内的元素进行顺序、倒序、随机排序的示例代码

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class Test {

List list  =   new  LinkedList();
public   static   void  main(String[] args)  {
List list  =   new  LinkedList();
for  ( int  i  =   0 ; i  <   9 ; i ++ )  {
list.add( " a " + i);
}
Collections.sort(list); // 顺序排列
System.out.println(list);

Collections.shuffle(list); // 混乱的意思
System.out.println(list);

Collections.reverse(list); // 倒序排列
System.out.println(list);

System.out.println(Collections.binarySearch(list,  " a5 " )); // 折半查找
}

}