int[][] edges = {{0, 1}, {1, 2}, {2, 0}}; boolean result = so.hasCycleDirectedGraph(3, edges); System.out.println(result); } } Detect Cycle in Undirected Graph 无向图找环 Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of n...
loop_detect是undirected graph的方法,用于检测一个图中是否存在环路。 使用方法如下: 1.构建一个无向图。可以使用邻接表或邻接矩阵等数据结构表示图。 2.调用loop_detect方法,并传入图数据结构作为参数。 3. loop_detect方法将返回一个boolean值,表示图中是否存在环路。 示例代码如下: ```python def loop_detect...
Detect cycle in undirected graph: method 1: Union FindThe time complexity of the union-find algorithm is O(ELogV).
Using a Depth First Search (DFS) traversal algorithm we can detect cycles in a directed graph. If there is any self-loop in any node, it will be considered as a cycle, otherwise, when the child node has another edge to connect its parent, it will also a cycle. For the disconnected ...
Denote G=(V,E,ω) as the weighted undirected graph of the LS with n samples, where V, E⊆V×V, and ω represent the node, edge, and edge weight sets, respectively, and each node represents a sample. Let A and D be the adjacency and diagonal matrices of G, the normalized adjacen...
An approximate algorithm is given in [3] to find the shortest cycle in an undirected unweighted graph, whose expected time complexity is between O(nlogn) and o(n2), where n is the number of vertices of a graph. The algorithm presented in [4] aims to find the shortest cycle for each ...
Because it differs from the use of ACO in solving the TSP, we describe our own use of ACO. First, we select features from all N features to support transportation mode classification. If we consider a feature as a city, N cities exist for constructing an undirected complete graph. The ...