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Introduction
For more than a year and a half I have had to use some kind of multi-node tree to do something. However, all I found from the Internet are binary trees or equivalents. I therefore decided to write my own. Because I had to finish it pretty fast, I spent only two days for it, so it may be buggy.
In the project, it has three classes working like in STL container-iterator style.
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template <class Key, class T> class Tree template <class Key, class T> class Tree_iterator template <class Key, class T> class TreeNode
A tree contains many tree nodes, while tree nodes contain data. Tree nodes of a tree are called children. In the design each node is assigned a level and the root node is of level 1. Tree_iterator
is for navigation within the tree. Two tree-walk styles are defined. One walks down from the root node, while the other one use post-style to walk through all children of the tree. For each walk action, a tree_iterator
is returned, so the user can use the iterator to reference the tree node and get the data.
I wrapped all the classes under the namespace Tiffany. For example, declaration of the tree with key type of wstring
, and node data type of string, and add two levels of element is like:
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Tiffany::Tree<wstring, string> x(L"Node 1", "Root"); px = x.AddChild(L"Key1","A"); px1 = x.AddChild(px, L"Key2", "1");
For a walk down action, you can limit it to a part of a tree ("sub-tree") by using the function SetSubTreePivot(px)
, and you can set the pivot to point back to the root node by calling SetWalkDownRootPivot. Try it out!. You can even delete part of the tree by calling DelSubTree()
.
Unfortunately I didn't have much time to prepare this document, but it should be obvious how to the classes.
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