rustworkx.generators.directed_binomial_tree_graph#
- directed_binomial_tree_graph(order, weights=None, bidirectional=False, multigraph=True)#
递归生成一个阶数为n的有向二项树。
当
bidirectional为False时,边缘会向右和向下传播- Parameters:
order (int) – Order of the binomial tree. The maximum allowed value for order on the platform your running on. If it’s a 64bit platform, the max value is 60 and on 32bit systems the max value is 29. Any order value above these will raise an
OverflowError.weights (Sequence[Any]) – 一个节点权重序列,通常是一个列表。 如果权重数量小于
2**order,将会添加值为 None 的额外节点。bidirectional (bool) – 表示节点之间的边是否应当存在于双方向的参数。默认为
False。multigraph (bool) – 当设为
False时,输出的PyDiGraph对象将不是多重图,并且 不允许添加平行边。相反, 会创建平行边的调用将更新现有边。
- Returns:
一个有向二项树,包含2^n个顶点和2^n - 1条边
- Return type:
- Raises:
IndexError – If the length of
weightsis greater that 2^nOverflowError – If the input order exceeds the maximum value for the current platform
import rustworkx.generators from rustworkx.visualization import mpl_draw graph = rustworkx.generators.directed_binomial_tree_graph(4) mpl_draw(graph)