Array
Introduction
One-dimensional array
Multidimensional array
Advantage of Array
Write a C program using arrays that produces the multiplication of two matrices.
Array
Introduction
One-dimensional array
Multidimensional array
Advantage of Array
Write a C program using arrays that produces the multiplication of two matrices.
The Array is the most commonly used Data Structure.
An array is a collection of data elements that are of the same type (e.g., a collection of integers, collection of characters, collection of doubles).
OR
Array is a data structure that represents a collection of the same types of data.
The values held in an array are called array elements
An array stores multiple values of the same type – the element type
The element type can be a primitive type or an object reference
Therefore, we can create an array of integers, an array of characters, an array of String objects, an array of Coin objects, etc.
2D array in C++ language ,define the concept of c++ Two-Dimensional array .with example .and also Accessing Array Components concept.and Processing Two-Dimensional Arrays.
Homework Assignment – Array Technical DocumentWrite a technical .pdfaroraopticals15
Homework Assignment – Array Technical Document
Write a technical document that describes the structure and use of arrays. The document should
be 3 to 5 pages and include an Introduction section, giving a brief synopsis of the document and
arrays, a Body section, describing arrays and giving an annotated example of their use as a
programming construct, and a conclusion to revisit important information about arrays described
in the Body of the document. Some suggested material to include:
Declaring arrays of various types
Array pointers
Printing and processing arrays
Sorting and searching arrays
Multidimensional arrays
Indexing arrays of various dimension
Array representation in memory by data type
Passing arrays as arguments
If you find any useful images on the Internet, you can use them as long as you cite the source in
end notes.
Solution
Array is a collection of variables of the same type that are referenced by a common name.
Specific elements or variables in the array are accessed by means of index into the array.
If taking about C, In C all arrays consist of contiguous memory locations. The lowest address
corresponds to the first element in the array while the largest address corresponds to the last
element in the array.
C supports both single and multi-dimensional arrays.
1) Single Dimension Arrays:-
Syntax:- type var_name[size];
where type is the type of each element in the array, var_name is any valid identifier, and size is
the number of elements in the array which has to be a constant value.
*Array always use zero as index to first element.
The valid indices for array above are 0 .. 4, i.e. 0 .. number of elements - 1
For Example :- To load an array with values 0 .. 99
int x[100] ;
int i ;
for ( i = 0; i < 100; i++ )
x[i] = i ;
To determine to size of an array at run time the sizeof operator is used. This returns the size in
bytes of its argument. The name of the array is given as the operand
size_of_array = sizeof ( array_name ) ;
2) Initialisg array:-
Arrays can be initialised at time of declaration in the following manner.
type array[ size ] = { value list };
For Example :-
int i[5] = {1, 2, 3, 4, 5 } ;
i[0] = 1, i[1] = 2, etc.
The size specification in the declaration may be omitted which causes the compiler to count the
number of elements in the value list and allocate appropriate storage.
For Example :- int i[ ] = { 1, 2, 3, 4, 5 } ;
3) Multidimensional array:-
Multidimensional arrays of any dimension are possible in C but in practice only two or three
dimensional arrays are workable. The most common multidimensional array is a two
dimensional array for example the computer display, board games, a mathematical matrix etc.
Syntax :type name [ rows ] [ columns ] ;
For Example :- 2D array of dimension 2 X 3.
int d[ 2 ] [ 3 ] ;
A two dimensional array is actually an array of arrays, in the above case an array of two integer
arrays (the rows) each with three elements, and is stored row-wise in memory.
For Example :- Program to fill .
An array is a group of data items of same data type that share a common name. Ordinary variables are capable of holding only one value at a time. If we want to store more than one value at a time in a single variable, we use arrays.
An array is a collective name given to a group of similar variables. Each member in the group is referred to by its position in the group.
Arrays are alloted the memory in a strictly contiguous fashion. The simplest array is a one-dimensional array which is a list of variables of same data type. An array of one-dimensional arrays is called a two-dimensional array.
Introduction of arrays, Declaration of array, Initialization of array, Sorting, Multidimensional array. Some code examples that will make you clear about the concept of arrays.
https://github.com/ashim888/csit-c
Analysis insight about a Flyball dog competition team's performanceroli9797
Insight of my analysis about a Flyball dog competition team's last year performance. Find more: https://github.com/rolandnagy-ds/flyball_race_analysis/tree/main
The Array is the most commonly used Data Structure.
An array is a collection of data elements that are of the same type (e.g., a collection of integers, collection of characters, collection of doubles).
OR
Array is a data structure that represents a collection of the same types of data.
The values held in an array are called array elements
An array stores multiple values of the same type – the element type
The element type can be a primitive type or an object reference
Therefore, we can create an array of integers, an array of characters, an array of String objects, an array of Coin objects, etc.
2D array in C++ language ,define the concept of c++ Two-Dimensional array .with example .and also Accessing Array Components concept.and Processing Two-Dimensional Arrays.
Homework Assignment – Array Technical DocumentWrite a technical .pdfaroraopticals15
Homework Assignment – Array Technical Document
Write a technical document that describes the structure and use of arrays. The document should
be 3 to 5 pages and include an Introduction section, giving a brief synopsis of the document and
arrays, a Body section, describing arrays and giving an annotated example of their use as a
programming construct, and a conclusion to revisit important information about arrays described
in the Body of the document. Some suggested material to include:
Declaring arrays of various types
Array pointers
Printing and processing arrays
Sorting and searching arrays
Multidimensional arrays
Indexing arrays of various dimension
Array representation in memory by data type
Passing arrays as arguments
If you find any useful images on the Internet, you can use them as long as you cite the source in
end notes.
Solution
Array is a collection of variables of the same type that are referenced by a common name.
Specific elements or variables in the array are accessed by means of index into the array.
If taking about C, In C all arrays consist of contiguous memory locations. The lowest address
corresponds to the first element in the array while the largest address corresponds to the last
element in the array.
C supports both single and multi-dimensional arrays.
1) Single Dimension Arrays:-
Syntax:- type var_name[size];
where type is the type of each element in the array, var_name is any valid identifier, and size is
the number of elements in the array which has to be a constant value.
*Array always use zero as index to first element.
The valid indices for array above are 0 .. 4, i.e. 0 .. number of elements - 1
For Example :- To load an array with values 0 .. 99
int x[100] ;
int i ;
for ( i = 0; i < 100; i++ )
x[i] = i ;
To determine to size of an array at run time the sizeof operator is used. This returns the size in
bytes of its argument. The name of the array is given as the operand
size_of_array = sizeof ( array_name ) ;
2) Initialisg array:-
Arrays can be initialised at time of declaration in the following manner.
type array[ size ] = { value list };
For Example :-
int i[5] = {1, 2, 3, 4, 5 } ;
i[0] = 1, i[1] = 2, etc.
The size specification in the declaration may be omitted which causes the compiler to count the
number of elements in the value list and allocate appropriate storage.
For Example :- int i[ ] = { 1, 2, 3, 4, 5 } ;
3) Multidimensional array:-
Multidimensional arrays of any dimension are possible in C but in practice only two or three
dimensional arrays are workable. The most common multidimensional array is a two
dimensional array for example the computer display, board games, a mathematical matrix etc.
Syntax :type name [ rows ] [ columns ] ;
For Example :- 2D array of dimension 2 X 3.
int d[ 2 ] [ 3 ] ;
A two dimensional array is actually an array of arrays, in the above case an array of two integer
arrays (the rows) each with three elements, and is stored row-wise in memory.
For Example :- Program to fill .
An array is a group of data items of same data type that share a common name. Ordinary variables are capable of holding only one value at a time. If we want to store more than one value at a time in a single variable, we use arrays.
An array is a collective name given to a group of similar variables. Each member in the group is referred to by its position in the group.
Arrays are alloted the memory in a strictly contiguous fashion. The simplest array is a one-dimensional array which is a list of variables of same data type. An array of one-dimensional arrays is called a two-dimensional array.
Introduction of arrays, Declaration of array, Initialization of array, Sorting, Multidimensional array. Some code examples that will make you clear about the concept of arrays.
https://github.com/ashim888/csit-c
Analysis insight about a Flyball dog competition team's performanceroli9797
Insight of my analysis about a Flyball dog competition team's last year performance. Find more: https://github.com/rolandnagy-ds/flyball_race_analysis/tree/main
Unleashing the Power of Data_ Choosing a Trusted Analytics Platform.pdfEnterprise Wired
In this guide, we'll explore the key considerations and features to look for when choosing a Trusted analytics platform that meets your organization's needs and delivers actionable intelligence you can trust.
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Data and AI
Discussion on Vector Databases, Unstructured Data and AI
https://www.meetup.com/unstructured-data-meetup-new-york/
This meetup is for people working in unstructured data. Speakers will come present about related topics such as vector databases, LLMs, and managing data at scale. The intended audience of this group includes roles like machine learning engineers, data scientists, data engineers, software engineers, and PMs.This meetup was formerly Milvus Meetup, and is sponsored by Zilliz maintainers of Milvus.
The Building Blocks of QuestDB, a Time Series Databasejavier ramirez
Talk Delivered at Valencia Codes Meetup 2024-06.
Traditionally, databases have treated timestamps just as another data type. However, when performing real-time analytics, timestamps should be first class citizens and we need rich time semantics to get the most out of our data. We also need to deal with ever growing datasets while keeping performant, which is as fun as it sounds.
It is no wonder time-series databases are now more popular than ever before. Join me in this session to learn about the internal architecture and building blocks of QuestDB, an open source time-series database designed for speed. We will also review a history of some of the changes we have gone over the past two years to deal with late and unordered data, non-blocking writes, read-replicas, or faster batch ingestion.
Levelwise PageRank with Loop-Based Dead End Handling Strategy : SHORT REPORT ...Subhajit Sahu
Abstract — Levelwise PageRank is an alternative method of PageRank computation which decomposes the input graph into a directed acyclic block-graph of strongly connected components, and processes them in topological order, one level at a time. This enables calculation for ranks in a distributed fashion without per-iteration communication, unlike the standard method where all vertices are processed in each iteration. It however comes with a precondition of the absence of dead ends in the input graph. Here, the native non-distributed performance of Levelwise PageRank was compared against Monolithic PageRank on a CPU as well as a GPU. To ensure a fair comparison, Monolithic PageRank was also performed on a graph where vertices were split by components. Results indicate that Levelwise PageRank is about as fast as Monolithic PageRank on the CPU, but quite a bit slower on the GPU. Slowdown on the GPU is likely caused by a large submission of small workloads, and expected to be non-issue when the computation is performed on massive graphs.
Enhanced Enterprise Intelligence with your personal AI Data Copilot.pdfGetInData
Recently we have observed the rise of open-source Large Language Models (LLMs) that are community-driven or developed by the AI market leaders, such as Meta (Llama3), Databricks (DBRX) and Snowflake (Arctic). On the other hand, there is a growth in interest in specialized, carefully fine-tuned yet relatively small models that can efficiently assist programmers in day-to-day tasks. Finally, Retrieval-Augmented Generation (RAG) architectures have gained a lot of traction as the preferred approach for LLMs context and prompt augmentation for building conversational SQL data copilots, code copilots and chatbots.
In this presentation, we will show how we built upon these three concepts a robust Data Copilot that can help to democratize access to company data assets and boost performance of everyone working with data platforms.
Why do we need yet another (open-source ) Copilot?
How can we build one?
Architecture and evaluation
2. One-Dimensional Arrays
• A list of values with the same data type that
are stored using a single group name (array
name).
• General array declaration statement:
data-type array-name[number-of-items];
• The number-of-items must be specified
before declaring the array.
const int SIZE = 100;
float arr[SIZE];
3. • Individual elements of the array can be
accessed by specifying the name of the
array and the element's index:
arr[3]
• Warning: indices assume values from 0 to
number-of-items -1!!
One-Dimensional Arrays (cont.)
4. One-Dimensional Arrays (cont.)
arr[0] arr[1] arr[2] arr[3] arr[4]
Skip over 3 elements to get
the starting location of
element 3
The array name arr identifies
the starting location of the array
Start here
element 3
5. 1D Array Initialization
• Arrays can be initialized during their declaration
int arr[5] = {98, 87, 92, 79, 85};
int arr[5] = {98, 87} - what happens in this case??
• What is the difference between the following two
declarations ?
char codes[] = {'s', 'a', 'm', 'p', 'l', 'e'};
char codes[] = "sample";
codes[0] codes[1] codes[2] codes[3] codes[4] codes[5] codes[6]
s a m p l e 0
6. Two-dimensional Arrays
• A two-dimensional array consists of both rows and
columns of elements.
• General array declaration statement:
data-type array-name[number-of-rows][number-of-columns];
7. • The number-of-rows and number-of-columns must
be specified before declaring the array.
const int ROWS = 100;
const int COLS = 50;
float arr2D[ROWS][COLS];
• Individual elements of the array can be accessed
by specifying the name of the array and the
element's row, column indices.
arr2D[3][5]
Two-dimensional Arrays (cont.)
8. 2D Array Initialization
• Arrays can be initialized during their
declaration
int arr2D[3][3] = { {98, 87, 92}, {79, 85, 19},
{32, 18, 2} };
• The compiler fills the array row by row
(elements are stored in the memory in the
same order).
9. 1D Arrays as Arguments
• Individual array elements are passed to a
function in the same manner as other
variables.
max = find_max(arr[1], arr[3]);
• To pass the whole array to a function, you
need to specify the name of the array only!!
10. #include <iostream.h>
float find_average(int [], int);
void main()
{
const numElems = 5;
int arr[numElems] = {2, 18, 1, 27, 16};
cout << "The average is " << find_average(arr, numElems) << endl;
}
float find_average(int vals[], int n)
{
int i;
float avg;
avg=0.0;
for(i=0; i<n; i++)
avg += vals[i];
avg = avg/n;
return avg;
}
11. • Important: this is essentially "call by
reference":
a) The name of the array arr stores the address of the
first element of the array arr[0] (i.e., &arr[0]).
b) Every other element of the array can be accessed by
using its index as an offset from the first element.
1D Arrays as Arguments (cont.)
arr[0] arr[1] arr[2] arr[3] arr[4]
The starting address of arr array is &arr[0].
This is passed to the function find_average()
12. 2D Arrays as Arguments
• Individual array elements are passed to a function
in the same manner as other variables.
max = find_max(arr2D[1][1], arr2D[1][2]);
• To pass the whole array to a function, you need to
specify the name of the array only!!
• The number of columns must be specified in the
function prototype and function header.
13. #include <iostream.h>
float find_average(int [][2], int, int);
void main()
{
const numRows = 2;
const numCols = 2;
int arr2D[numRows][numCols] = {2, 18, 1, 27};
float average;
average = find_average(arr2D, numRows, numCols);
cout << "The average is " << average << endl;
}
14. float find_average(int vals[][2], int n, int m)
{
int i,j;
float avg;
avg=0.0;
for(i=0; i<n; i++)
for(j=0; j<m; j++)
avg += vals[i][j];
avg = avg/(n*m);
return avg;
}
15. • Important: this is essentially "call by
reference":
a) The name of the array arr2D stores the
address of arr2D[0] (i.e., &arr2D[0])
b) arr2D[0] stores the address of the first
element of the array arr2D[0][0]
(&arr2D[0][0])
c) Every other element of the array can be
accessed by using its indices as an offset from
the first element.
2D Arrays as Arguments (cont.)