怎么定一个按字典倒序排序又按长度顺序排序的比较器?用来判断字符串

1. public int compare(String s1, String s2) {
   
2.     int strCompare = s2.compareTo(s1);
   
3.     if (strCompare == 0)
   
4.         return s1.length() - s2.length();
   
5.     return strCompare;
   
6. }

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