java 生成25个随机数，并排序

Random rd=new Random();           
List<Integer> l=new ArrayList<Integer>();
for (int i =0;i <=25;i ++){
        l.add( rd.nextInt(10));
}
System.out.println( l);
Collections.sort (l );
System.out.println( l);}
/* output:
[6, 4, 3, 2, 8, 1, 7, 3, 8, 1, 5, 9, 1, 4, 2, 2, 1, 2, 8, 3, 7, 2, 3, 8, 5, 0]
[0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 8, 8, 9]
*/