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4
votes
1answer
134 views

Inexpensive generation of hierarchical unique IDs

My application is building a hierarchical structure like this: root = { 'id': 'root', 'children': [ { 'name': 'root_foo', 'children': [] }, { 'id': 'root_foo2', 'children': [ { ...
1
vote
3answers
251 views

What is the name of this tree?

It has a single root and each node has 0..N ordered sub-nodes . The keys represent a distinct set of paths. Two trees can only be merged if they share a common root. It needs to support, at minimum: ...
1
vote
2answers
202 views

In order traversal of M way Trees

If we have a 4 way tree such as the one shown below, and we do an in order traversal, what would the output of the in-order traversal be for an M-way tree? In which order would the nodes be visited? ...
0
votes
1answer
127 views

Why can't an AVL tree be recreated using pre-order traversal?

Given a binary search tree, I understand why I can use breadth-first and pre-order traversal to list the entries of the tree in such a way as to reconstruct the tree in the order in which its ...
6
votes
1answer
113 views

Is there a way you'd implement a fast tree traversal method that would support dated versioning?

I've got a catalog at work and I want to juke it up a bit because I'm tired of it being extremely slow. I'd like to support the modified preorder tree traversal storage method for the category tree of ...
6
votes
1answer
156 views

What's the simplest example out there to explain the difference between Parse Trees and Abstract Syntax Trees?

To my understanding, a parser creates a parse tree, and then discards it thereafter. However, it can also pop out an abstract syntax tree, which the compiler supposedly makes use of. I'm under the ...
0
votes
2answers
95 views

Adding ordered nodes to tree in arbitrary order

I have a database of nodes. Each node can have exactly one parent, but any number of children. Some nodes may be stored with no parent, but at run time, I can create a default "root" node to be the ...
4
votes
1answer
279 views

How to find Sub-trees in non-binary tree

I have a non-binary tree. I want to find all "sub-trees" that are connected to root. Sub-tree is a a link group of tree nodes. every group is colored in it's own color. What would be be the ...
3
votes
3answers
160 views

Are tree structures inherently bad for mark-and-sweep garbage collector performance?

I'm implementing a bounding volume hierarchy in F#. Since it would be for a game, I want the garbage collector to be as quick and infrequent as possible. It seems though that I may have to pull some ...
2
votes
1answer
132 views

Idea of an algorithm to detect a website's navigation structure?

Currently I am in the process of developing an importer of any existing, arbitrary (static) HTML website into the upcoming release of our CMS. While the downloading the files is solved successfully, ...
4
votes
5answers
323 views

Am I overusing trees as a model or are they just very common?

I'm working on a project and I've found that I've modeled the two largest components as trees. My main uses so far are: Generically model physical containers (and sub containers, sub sub containers ...