public?void?testSort3(){

????List<String>?strList?=?new?ArrayList<String>();
????String?basicStr?=?"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
????Random?random?=?new?Random();


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

????????StringBuffer?sbf?=?new?StringBuffer();
????????int?length?=?random.nextInt(10)?+?1;

????????for(int?j?=?0;j?<?length;j++){

????????????int?charID?=?random.nextInt(basicStr.length());
????????????sbf.append(basicStr.charAt(charID));
????????}

????????if(!strList.contains(sbf.toString())){
????????????System.out.println("添加字符串："?+?sbf.toString());
????????????strList.add(sbf.toString());
????????}

????}

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

????Collections.sort(strList);
????for(String?str:strList){
????????System.out.println("元素為："?+?str);
????}

}