There are N students in a class. Some of them are friends, while some are not. Their friendship is transitive in nature. For example, if A is a direct friend of B, and B is a&nb...
题目:
https://leetcode.com/problems/friend-circles/
There are N students in a class. Some of them are friends, while some are not. Their friendship is transitive in nature. For example, ...
There are N students in a class. Some of them are friends, while some are not. Their friendship is transitive in nature. For example, if A is a direct friend of B, and B is a&nb...