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Graph implementation and representation

         

An Euler path in a graph is a path such that every edge is traversed exactly once. Consider the following adjacency matrix representation of the graph:

\[A = \left(\begin{array}{lcccr} 0 & 2 & 1 & 0 & 0 \\ 2 & 0 & 2 & 0 & 0 \\ 1 & 2 & 0 & 2 & 2 \\ 0 & 0 & 2 & 0 & 2 \\ 0 & 0 & 2 & 2 & 0 \end{array}\right)\]

Write pseudocode to check if the graph contains an Euler path.

Consider the directed graph above. Which one of the following is a correct topological ordering of the graph?

A Hamilton path of a graph is a path that contains all vertices exactly once. If the last vertex in a Hamilton path has the first vertex as a neighbor, then the path can be turned into a Hamilton circuit by joining the last vertex in the path to the first vertex, i.e, a Hamilton path that is also a cycle is a Hamilton circuit.

Does the following graph allow a Hamilton circuit?

In the adjacency matrix representation of the graph below, how many entries evaluate to True?

Which of the following choices is the minimum spanning tree for the following weighted graph?

A

B

C

D

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