Question

Show the output of the following code:

public class Test {
public static void main(String[] args) {
Graph < Character > graph = new UnweightedGraph < > ();
graph.addVertex('U');
graph.addVertex('V');
int indexForU = graph.getIndex('U');
int indexForV = graph.getIndex('V');
System.out.println("indexForU is " + indexForU);
System.out.println("indexForV is " + indexForV);
graph.addEdge(indexForU, indexForV);
System.out.println("Degree of U is " +
graph.getDegree(indexForU));
System.out.println("Degree of V is " +
graph.getDegree(indexForV));
}
}