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加入生成树,返回格式为(父,子)元组的列表
默认是从
1
开始执行 DFS(BFS 风格),可以通过指定容器实现 BFS 生成树或最小生成树。可以通过传入
from_weight
决定是否显示边权和如何显示,默认是lambda w: None
,即不显示。应该输出: