结果1 题目 Let G be a connected planar graph. If v is the number of vertices, e is the number of edges and f is the number of faces and v=e, then f=___.A、2B、2e-2 相关知识点: 试题来源: 解析 A 反馈 收藏
We revisit a problem formulated by Frank (Scand. J. Stat. 5 (1978) 177-188) of estimating the number of connected components in a large graph based on the subgraph sampling model, in which we randomly sample a subset of the vertices and observe the induced subgraph. The key question is...
I want to solve a question. I know how to solve it but I want a better way to solve it. in first line numbernis given and in second line,nnumbers is given. We call value ofi-th number asP_i. For thei-th number andj-th number, if(i - j) (P_i - P_j) < 0is true, t...
my environment running ArangoDB I'm using the latest ArangoDB of the respective release series: 3.2 Mode: Cluster Storage-Engine: rocksdb On this operating system: Linux RedHat .rpm I have a graph and I want to traverse it to find out al...
matter whether it is directed or not. Since I already give a UnionFind solution in the previous question. This one we use DFS. Note that this one cannot be used in the previous directed graph, this is because you cannot determine when to create a new group for the connected components. ...
Given a connected undirected graph, tell if its minimum spanning tree is unique.Definition 1 (Spanning Tree): Consider a connected, undirected graph G = (V, E). A spanning tree of G is a subgraph of G, say T = (V', E'), with the following properties...
I have a question regarding the Tarjan's algorithm for finding strongly connected components. The Tarjan's algorithm that I am taught for finding strongly connected components is as follows: 1. Start from any arbitrary vertex. 2. DFS from that vertex. For each node x, keep two numbers, dfs...
(degree of a node is the number of edges incident on that node) of the graph is among its constituent nodes. This question assumes tremendous importance from various network analysis viewpoints. For example, in studying the propagation of failure through a system of inter-dependent networks[23]...
(1) find connected components in the binary image using 2-D connectivity of 8 where eight pixels are connected if their boundaries or corners touch; (2) create label matrix from the connected components in the binary image with unique values; and (3) convert the created label matrix into ...
size_t index = 0; BGL_FORALL_VERTICES(v, tracks_connection_graph_, TracksConnectionGraph) { ...