Leetcode 547. Friend Circles | | Leetcode 547. Friend Circles 文章作者:Tyan博客:noahsnail.com | CSDN | 简书 1. Description 2. Solution12345678910111213141516171819202122232425262728293031class Solution {public: int findCircleNum(vector<vector<int>>& M) { int rows = M.size(); int flag[rows] = {0}; int count = 0; for(int i = 0; i < rows; i++) { if(!flag[i]) { ++count; queue<int> friends; friends.push(i); oneCircle(M, flag, friends); } } return count; } void oneCircle(vector<vector<int>>& M, int flag[], queue<int> friends) { int rows = M.size(); while(!friends.empty()) { int row = friends.front(); friends.pop(); for(int i = 0; i < rows; i++) { if(M[row][i] && i != row && !flag[i]) { flag[i] = 1; friends.push(i); } } } }}; Reference https://leetcode.com/problems/friend-circles/description/ 如果有收获,可以请我喝杯咖啡! 赏 微信打赏 支付宝打赏