leetcode521

class Solution {
    public int findLUSlength(String a, String b) {
        int alen = a.length();
        int blen = b.length();
        if (alen>blen){
            return alen;
        }else if (blen>alen){
            return blen;
        }else if(!a.equals(b)){
          return alen;  
        }
        return -1;
    }
}