I have this trie dictionary: I want to define a function that searches through this trie dict and finds its values. how to do it ? Answer here is how I do it:
Tag: trie
Nested `defaultdict of defaultdict of defaultdict` each with a backreference
Using tree = lambda: dedfaultdict(tree), I can replace the following code: with: What I actually want is for each dictionary node to have a backreference to its parent dictionary node. I can do this as follows: (proof that this works: link) So, given that I was able to use tree = lambda: defaultdict(tree) to replace node = node.setdefault(ch, {}) with
Python `collections.defaultdict` for the same class
I try to use a Trie data structure for some coding problem. For each node in a trie, you typically put a a list of reference of its children. So, I thought about using defaultdict to create a default empty trie node if some children does not exists in a lookup. However, I don’t know how to use defaultdict to