Programmer Think

Experimental purposes: Master the solution of undirected connected graph spanning tree;Master the solution of basic loop system and loop space.Master the basic cut set system and the solution of the cut set space;Understand the practical applications of spanning tree, loop space, and breakset space. Experimentation Requirements 1. Given an ...

1, Some concepts 1. Bipartite diagram It must not contain odd rings, but may contain rings with even length, not necessarily connected graphsBipartite graph is a special model in graph theory. Let G=(V,E) be an undirected graph. If vertex v can be divided into two disjoint subsets (A,B), and the two vertices i and j associated with each e ...

1. Introduction Graph: directed graph and undirected graphProblem solving steps: (1) Drawing construction: what kind of drawing and how to build it (2) Then, specific problems are analyzed, such as using BFS and greedy algorithm to operate the graph Joint search set //Parallel query set (manage a series of sets that do not want to ...

preface Graph theory has always been my biggest headache - 2021 / 9 / 4 Now I finally don't have a headache After grinding on dijkstra for a day, I finally realized him completely On graph theory Graph theory has always been the final topic in the competition, and it is also a difficult point In the popularity group, graph theory is ge ...

1, Directed graph In real life, many application related graphs are directional. The most intuitive is the network. You can jump from page a to page B through links. Then the direction of a and B connection is a - > b, but it can not be said to be B - > A. at this time, we need to use a directed graph to solve this kind of problem. T ...

dijkstra has four steps: Set the starting distance to 0Cycle n timesFind the point with the shortest distance outside the set each time and put it into the setUpdate the distance of all points connected to it with the points just put in The idea is to update the minimum value of other points by using the point with the shortest distance outsid ...

Many conceptual problems are not clearly understood by the author, so many basically the whole article needs to be improved Let's start with the multi-source shortest path algorithm 1.floyd algorithm (n3): (Floyd can also solve the problem of single source shortest, which is the shortest set of multiple single sources.) The core code has on ...

(it's a little small. Take your time and you'll get something) (1) First we have to understand, what is strong connectivity? If a path from u to v can be found in any two points u and v in the vertex subset of a directed graph, the subset is called strongly connected (2) Second, we have to understand what is a strongly connected component? If ...

The basic concept of map can be turned over catalogue Template base class of graph adjacency matrix Concrete class implementation of adjacency matrix Implementation of adjacency matrix constructor (an adjacency matrix can be initialized based on this constructor) The second storage method of graph adjacency table   Adjacency table ...

paper [1] Bi Xiaowei, Li Bin, Wang Yuqiang, Chen Shihua, Peng Ping, Lei Tao. Multi star up processing and down transmission data conflict optimization decision method based on directed graph model [J]. Electronic information countermeasure technology, 2020,35 (06): 46-49 + 77 HowNet connection https://kns.cnki.net/kcms/detail/detail. ...