Search results
Results from the WOW.Com Content Network
An abstract syntax tree (AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation of the abstract syntactic structure of text (often source code) written in a formal language. Each node of the tree denotes a construct occurring in the text.
Patricia Trie C++ template class implementation, by Radu Gruian; Haskell standard library implementation "based on big-endian patricia trees". Web-browsable source code. Patricia Trie implementation in Java, by Roger Kapsi and Sam Berlin; Crit-bit trees forked from C code by Daniel J. Bernstein; Patricia Trie implementation in C, in libcprops
In computer science, an in-tree or parent pointer tree is an N-ary tree data structure in which each node has a pointer to its parent node, but no pointers to child nodes. When used to implement a set of stacks , the structure is called a spaghetti stack , cactus stack or saguaro stack (after the saguaro , a kind of cactus). [ 1 ]
A singleton implementation may use lazy initialization in which the instance is created when the static method is first invoked. In multithreaded programs, this can cause race conditions that result in the creation of multiple instances. The following Java 5+ example [6] is a thread-safe implementation, using lazy initialization with double ...
The time cost to build a vantage-point tree is approximately O(n log n). For each element, the tree is descended by log n levels to find its placement. However there is a constant factor k where k is the number of vantage points per tree node. [3] The time cost to search a vantage-point tree to find a single nearest neighbor is O(log n).
This unsorted tree has non-unique values (e.g., the value 2 existing in different nodes, not in a single node only) and is non-binary (only up to two children nodes per parent node in a binary tree). The root node at the top (with the value 2 here), has no parent as it is the highest in the tree hierarchy.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Because we only traverse one branch of all the children at each rung of the tree, we achieve () runtime, where N is the total number of keys stored in the leaves of the B+ tree. [ 4 ] function search( k , root ) is let leaf = leaf_search(k, root) for leaf_key in leaf.keys(): if k = leaf_key: return true return false