I'm having a hell of a time trying to figure this one out. Everywhere I look, I seem to be only running into explanations on how to actually traverse through the list non-recursively (the part I actually understand). Can anyone out there hammer in how exactly I can go through the list initially and find the actual predecessor/successor n...
I`m writing binary search tree template for two reasons - learning C++ and learning most common algorithms and data structures. So, here is the question - as long as I want to implement iterators, it seems to me that there is no strict definition for where tree ends. What are your suggestions? How do I do this? ...
How can I find the preorder listing of a tree if only the postorder listing is given and vice versa. Also, in the tree, every non-leaf node has two children (i.e. Each node has either two or zero children.) EDIT: Another given assumption is that the label of each node is unique and has a field that will identify it as an internal node o...
A binary tree can be encoded using two functions l and r such that for a node n, l(n) give the left child of n , r(n) give the right child of n. A branch of a tree is a path from the root to a leaf, the length of a branch to a particular leaf is the number of arcs on the path from the root to that leaf. Let MinBranch(l,r,x) be a simple...
Say I have a binary tree with the following definition for a node. struct node { int key1 ; int key2 ; } The binary search tree is created on the basis of key1. Now is it possible to rearrange the binary search tree on basis of key2 in O(1) space. Although I can do this in variable space using an array of pointers to nodes. The act...
Hello fellow coders, Does anyone know the algorithm for doing a post order traversal of a binary tree WITHOUT using recursion. Any information would be greatly appreciated. ...
As a follow up to my original question about a small piece of this code I decided to ask a follow up to see if you can do better then what we came up with so far. The code below iterates over a binary tree (left/right = child/next ). I do believe there is room for one less conditional in here (the down boolean). The fastest answer wins!...
Here's the node definition: struct node{ int data; stuct node * left; struct node * right; }; What I am trying to do is list all the nodes that point to an ancestor node. After posting the wrong solution and taking advice from the answers, my new solution is: Recursively go through the binary tree. Add the current node to...
A binary tree can be encoded using two functions l and r such that for a node n, l(n) give the left child of n, r(n) give the right child of n. A branch of a tree is a path from the root to a leaf, the length of a branch to a particular leaf is the number of arcs on the path from the root to that leaf. Let MinBranch(l,r,x) be a simple ...
This has been bothering me for a while. I know that given N keys to arrange in the form of a binary search tree, the possible number of trees that can be created correspond to the Nth number from the Catalan sequence. I have been trying to determine why this is; unable to find anything that might even attempt to explain it intuitively ...
I`m writing STL-like container for binary-search tree. I have template class for Tree itself and nested class TreeNode. My question is where should I put the binary-predicate function which compairing keys - Into the tree class or into the Node class? If I decide to put it in a Tree class, all of my nodes would not know how to compare t...
How can I find a binary tree from a given traversal method (inorder,post-order,pre-order)? ...
I was reading the article from Steve Yegge about singletons. In it he mentions his teacher told him AVL Trees were evil. Is it just that red and black trees are a better solution? ...
I need an IntervalTree or RangeTree implementation in Java, and am having trouble finding one with working deletion support. There's a built-in one at sun.jvm.hotspot.utilities.IntervalTree, but the deleteNode method in the RBTree superclass states: /** * FIXME: this does not work properly yet for augmented red-black * trees since it...
A complete binary tree is defined as a binary tree in which every level, except possibly the deepest, is completely filled. At deepest level, all nodes must be as far left as possible. I'd think a simple recursive algorithm will be able to tell whether a given binary tree is complete, but I can't seem to figure it out. ...
i created a binary tree with some integer values ...i can search the tree by my code ,but i dont know how to proceed delete node operation ..help me with simple program using c..thanks in advance....... ...
Looking for examples on simple tree iterations in C++, both recursive and iterative. (post, pre and in-order) ...
In the tree class I'm suppose to compare two node, for you know searching and adding items. I have some issues with how to make it comparable. When one adds data(generic, anything) to the tree one calls the Tree class which then makes a new Node object. How can I declare the variable data/element in the Node class so that it is of type E...
Hi, What would be the efficient algorithm to find if two given binary trees are equal - in structure and content? Thanks. ...
According to this question the number of different search trees of a certain size is equal to a catalan number. Is it possible to enumerate those trees? That is, can someone implement the following two functions: Node* id2tree(int id); // return root of tree int tree2id(Node* root); // return id of tree (I ask because the binary co...