print('DFS:%s\n'%undirected.traverseDFS())
print('\nTesting Copy Undirected:')
copy = undirected.copyGraph()
print(copy)
print('BFS:\n%s'%copy.traverseBFS('s'))
print('\nDFS:%s\n'%copy.traverseDFS())
print('\nAfter Delete Vertex r:')
undirected.removeVertex('r')
print(undirected)
print('BFS:\n%s'%undirected.traverseBFS('s'))
print('\nDFS:%s\n'%undirected.traverseDFS())
print('\nAfter Delete Edge x->u:')
undirected.removeEdge('x','u')
print(undirected)
print('BFS:\n%s'%undirected.traverseBFS('s'))
print('\nDFS:%s\n'%undirected.traverseDFS())
print('Shortest Path v->y: %s'%undirected.shortestPath('v','y'))
print('Shortest Path s->y: %s'%undirected.shortestPath('s','y'))
undirected.removeEdge('x','y')
print('Shortest Path s->y after delete edge x->y: %s'%undirected.shortestPath('s','y'))
print('Graph is a DAG: %s'%undirected.isDAG())
print('\nUnchanged Copy:\n%s'%copy)
copy.removeVertex('w')
print('Removing vertex w:\n%s'%copy)
print('Copy Graph after removing vertex "v"')
copy.removeVertex('v')
print(copy)
print('DFS:%s\n'%copy.traverseDFS())
print('Compared to original graph:')
print(dag)
print('After Delete Vertex r:')
dag.removeVertex('r')
print(dag)
print('BFS:\n%s'%dag.traverseBFS('s'))
print('\nDFS:%s\n'%dag.traverseDFS())
print('\nAfter Delete Edge x->u:')
dag.removeEdge('x','u')
print(dag)
print('BFS:\n%s'%dag.traverseBFS('s'))
print('\nDFS:%s\n'%dag.traverseDFS())
print('Shortest Path v->y: %s'%dag.shortestPath('v','y'))
print('Shortest Path s->y: %s'%dag.shortestPath('s','y'))
dag.removeEdge('x','y')
print('Shortest Path s-> y after delete edge x->y: %s'%dag.shortestPath('s','y'))
print('\nGraph is a DAG: %s'%dag.isDAG())
print('\nCopy:\n%s'%copy)
