可运行作业代码，欢迎一起优化

public void textSort3() { //通过sort方法 对随机String泛型的List进行排序

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

Random random = new Random();

StringBuffer sb = new StringBuffer();

String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

for(int i = 0; i < 10; i++) { //循环10条字符串

int length = random.nextInt(10);

do { //避免字符串长度为0 生成空字符串

length = random.nextInt(10);

}while(length == 0);

for(int j = 1; j <= length; j++) { //生成随机字符并添加入sb字符串中

int num = random.nextInt(62);

sb.append(str.charAt(num));

}

randomStringList.add(sb.toString()); //将字符串sb加入List中

sb.delete(0, sb.length()); //清空字符串sb

}

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

for(String string : randomStringList) { //循环遍历

System.out.println("元素：" + string);

}

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

for(String string : randomStringList) { //循环遍历

System.out.println("元素：" + string);

}

}