We can think of a tree as being a special kind of directed graph. To model a tree as a graph, we make the nodes of the tree become nodes in the graph and draw an edge from a parent node to each of its children. The drawing on the left shows a tree as a graph; the other three directed graphs do not correspond to a tree. Suppose we want to check if a given directed graph as shown in Figure 3 corresponds to a tree. A tree Not a tree Not a tree Not a tree b Figure 3: 4 tree and not a traa structure
We can think of a tree as being a special kind of directed graph. To model a tree as a graph, we make the nodes of the tree become nodes in the graph and draw an edge from a parent node to each of its children. The drawing on the left shows a tree as a graph; the other three directed graphs do not correspond to a tree. Suppose we want to check if a given directed graph as shown in Figure 3 corresponds to a tree. A tree Not a tree Not a tree Not a tree b Figure 3: 4 tree and not a traa structure
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:We can think of a tree as being a special kind of directed graph. To model a tree as a
graph, we make the nodes of the tree become nodes in the graph and draw an edge from a
parent node to each of its children. The drawing on the left shows a tree as a graph; the
other three directed graphs do not correspond to a tree. Suppose we want to check if a
given directed graph as shown in Figure 3 corresponds to a tree.
A tree
Not a tree
Not a tree
Not a tree
b. Figure 3: A tree and not a tree structure.
Transcribed Image Text:i.
What properties should we check that the graph has for it to be a tree?
ii.
Write down a C++ function or more such that, if a directed graph has fulfilled
some conditions in the function, it must be a tree. You can refer to standard
properties of graphs in your answer without explaining them.
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