*/intnetworkDelayTime(int**times,int timesRowSize,int timesColSize,intN,intK){int dist[N+1];for(int i=0;i<N+1;++i){//初始化K到每个节点的距离为最大值dist[i]=INT_MAX;}//到自己的距离为0dist[K]=0;int loop=1;while(loop--){//遍历所有边for(int i=0;i<timesRowSize;i++){...
1intnetworkDelayTime1(vector<vector<int>>& times,intN,intK)2{3//建立结果集4intinf =0x3f3f3f3f;5vector<vector<int> > dist(N +1, vector<int>(n +1, inf));67//对结果集进行初始化8for(inti =1; i <= N; i++)9dist[i][i] =0;1011for(auto &item : times)12{13dist[item[0...
【leetcode】Network Delay Time 题目: There are N network nodes, labelled 1 to N. Given times, a list of travel times as directed edges times[i] = (u, v, w), where u is the source node, v is the target node, and w is the time it takes for a signal to travel from source to...
We will send a signal from a given nodek. Returntheminimumtime it takes for all thennodes to receive the signal. If it is impossible for all thennodes to receive the signal, return-1. Example 1: Input:times = [[2,1,1],[2,3,1],[3,4,1]], n = 4, k = 2Output:2 Example ...
743. Network Delay Time There are N network nodes, labelled 1 to N. Given times, a list of travel times as directed edges times[i] = (u, v, w), where u is the source node, v is the target node, and w is the time it takes for......
func networkDelayTime(times [][]int, n int, k int) int { // 根据 times 构建邻接表 adj := make([][]*AdjNode, n + 1) for _, time := range times { adj[time[0]] = append(adj[time[0]], &AdjNode{ v: time[1], w: time[2]}) } // dist[i] 表示从 k 到 i 的最短...
int networkDelayTime(vector<vector<int>>& times, int N, int K) { int res=0; vector<vector<int>> edges(101,vector<int>(101,-1)); queue<int> q{{K}}; vector<int> dist(N+1,INT_MAX); dist[K]=0; for(auto e:times){
def networkDelayTime(self, times, N, K): """ :type times: List[List[int]] :type N: int :type K: int :rtype: int """ inf = float('inf') dp = [inf]*(N+1) dp[K] = 0 for i in range(1, N): # N+1 is not neccessary ...
Graph Neural Network Review 图(graph)是一个非常常用的数据结构,现实世界中很多很多任务可以描述为图问题,比如社交网络,蛋白体结构,交通路网数据,以及很火的知识图谱等,甚至规则网格结构数据(如图像,视频等)也是图数据的一种特殊形式,因此图是一个很值得研究的领域。 针对graph的研究可以分为三类: 1.经典的...
class Solution(object): def networkDelayTime(self, times, N, K): """ :type times: List[List[int]] :type N: int :type K: int :rtype: int """ nodeDict = collections.defaultdict(list) inNodes = collections.Counter() for u, v, w in times: nodeDict[u].append([v, w]) inNode...