Depth First Search Path Traversal

Target

For the tree structure in the figure below, traverse and output the path from all leaf nodes to the root node.

The process of traversal

Given one example, starts from node e

:param start:
        eg: 'e'
:param child_father_dict:
        eg: {'e': {'b'}, 'b': {'a'}}
:return: all_path:
        eg: ['e', 'b', 'a']

Output

[[['h', 'd', 'a']], [['f', 'c', 'a'], ['f', 'b', 'a']], [['e', 'b', 'a']], [['g', 'c', 'a'], ['g', 'd', 'a']]]

Acknowledgement

深度搜索算法（python实现）获取所有叶子节点到根节点的路径

https://www.codeleading.com/article/21464801118/

Built With

• Pandas - helper data manipulation library