Concept explainers
Explanation of Solution
Return statement for “getIndex(v)” method if “v” is not in the graph:
The method returns the value “-1” because, the value of “v” is not in the graph.
Explanation:
The method “getIndex()” is to return the index for specified vertex. If the appropriate vertex not in graph then it returns “-1”.
Outcome of “getVertex(index)” method if “index” is not in the graph:
The method returns run time error “IndexOutBoundsException” because the appropriate index value is not available in the graph.
Explanation:
The method “getVertex()” is to return the vertex object for the specified vertex index. If the index not in the graph it throws run time error.
Outcome of “addVertex(v)” method if “v” is already in the graph:
The method returns the Boolean value “false” because the vertex is already added into the graph...
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