Detect cycle in a directed graph is using aDFS. Depth First Traversal can be used to detect cycle in a Graph. DFS for a connected graph produces a tree. There is a cycle in a graph only if there is aback edgepr
Detect cycle in an undirected graph https://www.geeksforgeeks.org/detect-cycle-undirected-graph/ 无向图就简单很多,如果dfs的时候,当前节点的neighbor中有被访问过且不是parent的节点,就一定有环存在。 这里顺便复习一下dfs两种写法:1) dfs最开始判断边界条件 2) dfs前判断边界条件 由于需要dfs时判断是否是p...
Data StructureGraph AlgorithmsAlgorithms To detect if there is any cycle in the undirected graph or not, we will use the DFS traversal for the given graph. For every visited vertex v, when we have found any adjacent vertex u, such that u is already visited, and u is not the parent of...
Learn how to detect cycles in a directed graph using various algorithms and techniques. This guide covers necessary concepts and practical implementations.
Another two important cycles are the shortest and longest cycles of a graph, because they decide the girth and diameter/circumference of a graph, respectively. An approximate algorithm is given in [3] to find the shortest cycle in an undirected unweighted graph, whose expected time complexity is...