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Introduction to Data Structures and ADT
Introduction to Data Structures and ADT

Introduction to Data Structures and ADT
Introduction to Data Structures and ADT

... A binary tree is made up of a finite set of nodes that is either empty or consists of a node called the root together with two binary trees, called the left and right subtrees, which are disjoint from each other and from the root. ...
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Data Structures and Algorithms

... an even greater emphasis on real-time systems) the selection of the wrong data structure or algorithm can be the cause of a great deal of performance pain. IV ...
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LCM ver.3: Collaboration of Array, Bitmap and Pre x Tree for

... on E is a set T = {T1 , . . . , Tm } such that each Ti is included in E. Each Ti is called a transaction. We denote by ||T || the sum of sizes of all transactions in T , that is, the size of database T . A set P ⊆ E is called an itemset. The maximum element of P is called the tail of P , and denoted ...
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Landscape Connectivity: A Graph

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External-Memory Algorithms for Processing Line Segments in

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Undirected graphs

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Open Data Structures (in C++)

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Open Data Structures (in Java)

Dynamic Data Structures: Orthogonal Range Queries and Update
Dynamic Data Structures: Orthogonal Range Queries and Update

... present a dynamic data structure for internal memory and its variant for external memory, that support both queries and updates more efficiently than previous worst-case efficient structures, under the assumption that the x-coordinates of the points are drawn from a smooth probabilistic distributio ...
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CAS-Based Lock-Free Algorithm for Shared Deques
CAS-Based Lock-Free Algorithm for Shared Deques

... For this algorithm, the ABA problem occurs only if a node is popped and then reinserted while a process holds a reference to it with the intent of using that reference as an expected value of an ABA-prone comparison. The simplest method for preventing the ABA problem is to include a tag with each po ...
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IndexedFiles

... • The data file is ordered on a non-key field unlike primary index, which requires that the ordering field of the data file have a distinct value for each record. • Includes one index entry for each distinct value of the field; the index entry points to the first data block that contains records wit ...
Chapter 25 Java Data Structures
Chapter 25 Java Data Structures

... // Add elements to the list list.add("America"); // Add it to the list System.out.println("(1) " + list); list.add(0, "Canada"); // Add it to the beginning of the list System.out.println("(2) " + list); list.add("Russia"); // Add it to the end of the list System.out.println("(3) " + list); list.add( ...
TOPICS IN ALGORITHMS
TOPICS IN ALGORITHMS

Project 1 1.A.1 parent process P creates a single child process that
Project 1 1.A.1 parent process P creates a single child process that

... P provides C1 with a number, e.g., n; C1 computes the sequence of fib(n) numbers; C1 sends the number n and the sequence of fib numbers to C2 C2 computes the ratio of #prime numbers/#non-prime numbers in the sequence; C2 sends the number n and the ratio to P P accumulates the number n and the associ ...
Screen PDF - Open Data Structures
Screen PDF - Open Data Structures

... means that this application will take at least 1012 /109 = 1000 seconds, or roughly 16 minutes and 40 seconds. Sixteen minutes is an eon in computer time, but a person might be willing to put up with it (if he or she were headed out for a coffee break). Bigger data sets: Now consider a company like ...
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... Best, Worst, Average Cases Not all inputs of a given size take the same time to run. Sequential search for K in an array of n integers: ...
Sorted Range Reporting
Sorted Range Reporting

< 1 ... 8 9 10 11 12 13 14 15 16 ... 95 >

Quadtree



A quadtree is a tree data structure in which each internal node has exactly four children. Quadtrees are most often used to partition a two-dimensional space by recursively subdividing it into four quadrants or regions. The regions may be square or rectangular, or may have arbitrary shapes. This data structure was named a quadtree by Raphael Finkel and J.L. Bentley in 1974. A similar partitioning is also known as a Q-tree. All forms of quadtrees share some common features: They decompose space into adaptable cells Each cell (or bucket) has a maximum capacity. When maximum capacity is reached, the bucket splits The tree directory follows the spatial decomposition of the quadtree.
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