Пример #1
0
def main():
    """ Make it so. """
    edges = None
    graph_name = setup_args()
    try:
        print(('Loading graph: {}'.format(graph_name)))
        edges = getattr(data.data, graph_name)
    except (AttributeError, TypeError):
        print(('\nInvalid graph name. Available graphs:\n\t{}\n'.format(
            '\n\t'.join([x for x in dir(data.data)
                         if not x.startswith('__')]))))
        sys.exit()

    original_graph = network.Graph(edges)

    print(('{} edges'.format(len(original_graph))))
    if not original_graph.is_eularian:
        print('Converting to Eularian path...')
        graph = eularian.make_eularian(original_graph)
        print('Conversion complete')
        print(('\tAdded {} edges'.format(len(graph) - len(original_graph))))
        print(('\tTotal cost is {}'.format(graph.total_cost)))
    else:
        graph = original_graph

    print('Attempting to solve Eularian Circuit...')
    route, attempts = eularian.eularian_path(graph, start=1)
    if not route:
        print(('\tGave up after {} attempts.'.format(attempts)))
    else:
        print(('\tSolved in {} attempts'.format(attempts, route)))
        print(('Solution: ({} edges)'.format(len(route) - 1)))
        print(('\t{}'.format(route)))
Пример #2
0
def main():
    edges = None
    graph_name = setup_args()
    try:
        edges = getattr(data.data, graph_name)
    except (AttributeError, TypeError):
        print('Invalid graph name. Available graphs:\n\t{}\n'.format(
            '\n\t'.join([x for x in dir(data.data)
                         if not x.startswith('__')])))
        sys.exit()

    original_graph = network.Graph(edges)

    print('Number of edges: {}'.format(len(original_graph)))
    if not original_graph.is_eularian:
        graph, num_dead_ends = eularian.make_eularian(original_graph)
        # print('\tAdded {} edges'.format(len(graph) - len(original_graph) + num_dead_ends))
        print('Total cost: {}'.format(graph.total_cost))
    else:
        graph = original_graph

    route, attempts = eularian.eularian_path(graph, start=1)
    if not route:
        print('Gave up after <{}> attempts.'.format(attempts))
    else:
        print('Solution ({} edges):'.format(len(route) - 1))
        print('{}'.format(route))
Пример #3
0
def main():
    edges = None
    graph_name = setup_args()
    try:
        edges = getattr(data.data, graph_name)
    except (AttributeError, TypeError):
        print('Графа з такою назвою не існує. Доступні графи: \n\t{}\n'.format(
            '\n\t'.join([x for x in dir(data.data)
            if not x.startswith('__')])))
        sys.exit()

    original_graph = network.Graph(edges)

    print('Кількість ребер: {}'.format(len(original_graph)))
    if not original_graph.is_eularian:
        graph, num_dead_ends = eularian.make_eularian(original_graph)
        #print('\tAdded {} edges'.format(len(graph) - len(original_graph) + num_dead_ends))
        print('Загальна вартість: {}'.format(graph.total_cost))
    else:
        graph = original_graph

    route, attempts = eularian.eularian_path(graph, start=1)
    if not route:
        print('Здався після <{}> спроб.'.format(attempts))
    else:
        print('Відповідь ({} вершини):'.format(len(route) - 1))
        print('{}'.format(route))
Пример #4
0
 def test_find_cost_easy(self):
     graph = network.Graph([(1,2,1), (2,3,1), (3,4,5), (4,1,5)])
     path = (1, 3)
     cost, route = di.find_cost(path, graph)
     expected = (2, [1, 2, 3])
     self.assertEqual(expected, (cost, route))