public void teseSort3(){

List<String> sList = new ArrayList<String>();

StringBuffer sb = new StringBuffer();

Random random = new Random();

String st = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLMNBVCXZ1234567890";

Integer k;

do{

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

k = random.nextInt(10);

for (int j = 0; j < k; j++)

{

int a = random.nextInt();

sb.charAt(st.charAt(a));

}

sList.add(sb.toString());

System.out.println("随机生成的字符串为：" + sb.toString());

sb.setLength(0);

}

}while(sList.contains(sList));

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

for (String string : sList)

{

System.out.println("元素： " + string);

}

Collections.sort(sList);

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

for (String string : sList)

{

System.out.println("元素： " + string);

}

}