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Structures - CS Course Webpages
Structures - CS Course Webpages

... • When a pointer to a structure is passed to a function, only the address of the structure is pushed on the stack. This makes for very fast function calls. • Passing a pointer makes it possible for the function to modify the contents of the structure used as the argument via call-byreference. ...
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STL

COS 226         ... Fall 2010 R. Tarjan, Preceptor
COS 226 ... Fall 2010 R. Tarjan, Preceptor

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A D S COS

Data Structures and Algorithms - Cambridge Computer Laboratory
Data Structures and Algorithms - Cambridge Computer Laboratory

... this is first to adopt a generic idea of what a computer is, and measure costs in abstract “program steps” rather than in real seconds, and then to agree to ignore constant factors in the cost-estimation formula. As a further simplification we agree that all small problems can be solved pretty rapidly ...
Introduction Data Structures & Algorithm
Introduction Data Structures & Algorithm

Chapter 19 Java Data Structures
Chapter 19 Java Data Structures

... some people refer a data structure as a container object or a collection object. To define a data structure is essentially to declare a class. The class for a data structure should use data fields to store data and provide methods to support operations such as insertion and deletion. To create a dat ...
Document
Document

... merging problem. • Every element inside a matching block has to be ranked inside the other matching block. • Hence, the problem of merging a pair of matching blocks is an independent subproblem which does not affect any other block. Page 16 ...
Historical Queries Along Multiple Lines of Time Evolution
Historical Queries Along Multiple Lines of Time Evolution

Data Indexing
Data Indexing

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7. Full-Text Indexes in External Memory

... character occupies a single machine word, and all usual integer operations on characters can be performed in constant time. For internal memory computation, we sometimes assume the constant alphabet model , which differs from the integer alphabet model in that dictionary operations on sets of charact ...
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STL (codes)

printer-friendly
printer-friendly

Dictionaries-Hash-Tables-and-Sets
Dictionaries-Hash-Tables-and-Sets

... Implement the data structure "hash table" in a class HashTable. Keep the data in array of lists of keyvalue pairs (LinkedList>[]) with initial capacity of 16. When the hash table load runs over 75%, perform resizing to 2 times larger capacity. Implement the following methods a ...
Succinct Data Structures - the David R. Cheriton School of Computer
Succinct Data Structures - the David R. Cheriton School of Computer

... Given: Universe of n elements [0,...n-1] and m arbitrary elements from this universe Create: a static structure to support search in constant time (lg n bit word and usual operations) Using: Essentially minimum possible # bits n )) ... lg((m Operation: Member query in O(1) time (Brodnik & M.) ...
heap property
heap property

... Each of these will run in O(lg n) time, which means that the procedure will also run in O(lg n) time. The heap provides an efficient implementation for a priority queue using the operations outlined, but is not so efficient in other cases For example, an operation which may sometimes be required is ...
Compressed Suffix Trees with Full Functionality
Compressed Suffix Trees with Full Functionality

Compressed Inverted Indexes for In-Memory
Compressed Inverted Indexes for In-Memory

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The vector class

... An array is a container that stores the n (size) elements in a contiguous block of memory. Once declared, n cannot be changed. Array name is associated with the address of the array. So when an array is passed to a function, the size (or the number of elements that need to be processed) of the array ...
Min-Max Heaps and Generalized Priority Queues
Min-Max Heaps and Generalized Priority Queues

... Using the properties of min-max heaps, an orderstatistics tree can be constructed in linear time, any Find operation (on the specified set of ranks) can be performed in constant time, the Insert operation and any Delete operation (on the specified set of ranks) can be performed in logarithmic time, ...
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hash 2 (x)

Soft Kinetic Data Structures
Soft Kinetic Data Structures

... a sorted sequence of keys. We consider also the same events as in sorting, namely, an even occur when two keys change their relative order• We observe also that it does not seem to be a good idea to measure the quality of the search tree by its edit distance to a correct search tree. This is because ...
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**** 1 - postech

... • The steps are:  Pick an element, called a pivot, from the list.  Partitioning: Reorder the list so that all elements with values less than the pivot come before the pivot, while all elements with values greater than the pivot come after it. • Equal values can go either way. • After this partitio ...
MS Word - School of Computer Science Student WWW Server
MS Word - School of Computer Science Student WWW Server

...  “At 36.7 seconds after H0 (approx. 30 seconds after lift-off) the computer within the back-up inertial reference system, which was working on stand-by for guidance and attitude control, became inoperative. This was caused by an internal variable related to the horizontal velocity of the launcher e ...
Chapter 27 Hashing Why Hashing? Objectives Map
Chapter 27 Hashing Why Hashing? Objectives Map

... Liang, Introduction to Java Programming, Tenth Edition, (c) 2013 Pearson Education, Inc. All rights reserved. ...
< 1 ... 16 17 18 19 20 21 22 23 24 ... 47 >

Array data structure

In computer science, an array data structure or simply an array is a data structure consisting of a collection of elements (values or variables), each identified by at least one array index or key. An array is stored so that the position of each element can be computed from its index tuple by a mathematical formula. The simplest type of data structure is a linear array, also called one-dimensional array.For example, an array of 10 32-bit integer variables, with indices 0 through 9, may be stored as 10 words at memory addresses 2000, 2004, 2008, ... 2036, so that the element with index i has the address 2000 + 4 × i.Because the mathematical concept of a matrix can be represented as a two-dimensional grid, two-dimensional arrays are also sometimes called matrices. In some cases the term ""vector"" is used in computing to refer to an array, although tuples rather than vectors are more correctly the mathematical equivalent. Arrays are often used to implement tables, especially lookup tables; the word table is sometimes used as a synonym of array.Arrays are among the oldest and most important data structures, and are used by almost every program. They are also used to implement many other data structures, such as lists and strings. They effectively exploit the addressing logic of computers. In most modern computers and many external storage devices, the memory is a one-dimensional array of words, whose indices are their addresses. Processors, especially vector processors, are often optimized for array operations.Arrays are useful mostly because the element indices can be computed at run time. Among other things, this feature allows a single iterative statement to process arbitrarily many elements of an array. For that reason, the elements of an array data structure are required to have the same size and should use the same data representation. The set of valid index tuples and the addresses of the elements (and hence the element addressing formula) are usually, but not always, fixed while the array is in use.The term array is often used to mean array data type, a kind of data type provided by most high-level programming languages that consists of a collection of values or variables that can be selected by one or more indices computed at run-time. Array types are often implemented by array structures; however, in some languages they may be implemented by hash tables, linked lists, search trees, or other data structures.The term is also used, especially in the description of algorithms, to mean associative array or ""abstract array"", a theoretical computer science model (an abstract data type or ADT) intended to capture the essential properties of arrays.
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