Please help find the bug: P133 Clone Graph

  • 0

    my code is as follows:

       def cloneGraph(self, node):         
        if node == None:
            return None
        visited = set()
        q = [node]
        res_node = UndirectedGraphNode(node.label)
        res_q = [res_node]
        tmp_node = None
        while len(q) > 0:
            node = q.pop(0)
            tmp_node = res_q.pop(0)
            # print('tmp_node.label=%d, node.label=%d'%(tmp_node.label, node.label))
            for neighbor in node.neighbors[::-1]:
                res_neighbor = UndirectedGraphNode(neighbor.label)
                tmp_node.neighbors.insert(0, res_neighbor)
                # print(neighbor.label)
                if neighbor.label not in visited:
                    q.insert(0, neighbor)
                    # visited.add(neighbor.label)
                    res_q.insert(0, res_neighbor)
        return res_node

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