Is Dijkstra's algorithm for directed or undirected graphs?
In the context of Dijkstra's algorithm, whether the graph is directed or undirected does not matter. Dijkstra's algorithm simply references the adjacent vertices of a vertex. It is this adjacency list that …
algorithm - Cycles in an Undirected Graph - Stack Overflow
The graph is undirected, and therefore, the when the algorithm inspects an edge, there are only two possibilities: Either it has visited the other end of the edge, or it has and then, this edge closes a …
Are Trees Directed or Undirected Graphs? - Stack Overflow
Jan 14, 2013 · I have read that Trees are special cases of Graphs. Graphs can be directed or undirected. But if we consider tree as a data structure is it directed or undirected graph?
What is the difference between a directed and undirected graph
Mar 29, 2018 · 4 The difference is the same as between one directional and bidirectional streets - in directed graph, the direction matters and you can't use the edge in the other direction. An undirected …
Give the minimum and the maximum number of edges in an …
Nov 24, 2014 · Yes.. The minimum number of edges for undirected connected graph is (n-1) edges. To see this, since the graph is connected then there must be a unique path from every vertex to every …
Finding the max flow of an undirected graph with Ford-Fulkerson
Given the following undirected graph, how would I find the max-flow/min-cut? Now, I know that in order to solve this, I need to redraw the graph so that it is directed as shown below. However, afte...
DFS in an undirected graph - can it have cross edges?
Mar 9, 2015 · The most natural answer seems to be affirmative. I have yet to find a counter-example. What do you think? In DFS terminology: Can an edge be a cross-edge in DFS - an edge that leads to …
Undirected graph conversion to tree - Stack Overflow
Dec 10, 2011 · Given an undirected graph in which each node has a Cartesian coordinate in space that has the general shape of a tree, is there an algorithm to convert the graph into a tree, and find the …
Proving that the number of vertices of odd degree in any graph G is ...
Jan 23, 2015 · Given $G$ is an undirected graph, the degree of a vertex $v$, denoted by $\mathrm {deg} (v)$, in graph $G$ is the number of neighbors of $v$. Prove that the number of vertices of odd …
Finding all cycles in undirected graphs - Stack Overflow
Sep 11, 2012 · Finding all cycles in an undirected graph Cycles in an Undirected Graph -> detects only whether there is a cycle or not Finding polygons within an undirected Graph -> very nice description, …