【leetcode_easy】1207. Unique Number of Occurrences

leetcode_easy_hashmap

problem

1207. Unique Number of Occurrences

solution #1: 多个map或者set;

code

 

solution #2: 排序判断；

code

 

参考

1. leetcode_1207. Unique Number of Occurrences;

2. cplusplus_map;

完