Arrays allow storing multiple values in consecutive memory locations using a single name. An array contains elements that are accessed using an index. There are different types of arrays including one-dimensional, two-dimensional, and N-dimensional arrays. Arrays can be initialized by assigning values at declaration time. Elements are accessed using the array name and index. Common array operations include searching, sorting, and computing statistics like mean, median and mode.
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.
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
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.
Use this chart to compare common pool surfacing options.
Views the pros and cons of Fibre Tech, marcite, exposed aggregate (concrete), vinyl liners, and painted surfaces.
Compare performace across factors like warranty length, attractiveness, algae resistance, resistance to stains and blemishes, and chemical requirements.
Original version available at the Fibre Tech Swimming Pools' website: http://www.fibretechinc.com/compare-fibre-tech
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
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.
Use this chart to compare common pool surfacing options.
Views the pros and cons of Fibre Tech, marcite, exposed aggregate (concrete), vinyl liners, and painted surfaces.
Compare performace across factors like warranty length, attractiveness, algae resistance, resistance to stains and blemishes, and chemical requirements.
Original version available at the Fibre Tech Swimming Pools' website: http://www.fibretechinc.com/compare-fibre-tech
This Tax season, SSRS wanted to know how Americans prepared their Tax returns, how many people received a refund, and how those Tax refunds are being spent. Take a look at our findings.
Spring has officially sprung! The birds are chirping, the sun is shining, the flowers are blooming, and our allergies are going wild! With so much beauty growing right before our eyes, we were interested to find out America’s favorite spring flower. View our April Omnibus Spotlight findings.
This is the third set of slightly updated slides from a Perl programming course that I held some years ago.
I want to share it with everyone looking for intransitive Perl-knowledge.
A table of content for all presentations can be found at i-can.eu.
The source code for the examples and the presentations in ODP format are on https://github.com/kberov/PerlProgrammingCourse
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.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
2. ARRAYS & Matrices
SK Ahsan
WHAT IS ARRAYS?
An array is a group of consecutive memory locations
with same name and data type.
Simple variable is a single memory location with unique
name and a type. But an Array is collection of different
adjacent memory locations. All these memory locations
have one collective name and type.
The memory locations in the array are known as
elements of array.The total number of elements in the
array is called length.
The elements of array is accessed with reference to its
position in array, that is call index or subscript.
3. ARRAYS & Matrices
SK Ahsan
WHAT IS AN ARRAY?
■ We refer to all stored values in an array by its
name
■ If we would like to access a particular value
stored in an array, we specify its index (i.e. its
position relative to the first array value)
– The first array index is always 0
– The second value is stored in index 1
– Etc.
4. ARRAYS & Matrices
SK Ahsan
WHAT IS AN ARRAYS?
■ Arrays
– Structures of related data items
– Static entity (same size throughout program)
■ A few types
– Pointer-based arrays (C-like)
– Arrays as objects (C++)
5. ARRAYS & Matrices
SK Ahsan
Advantages / Uses of Arrays
■ Arrays can store a large number of value with single name.
■ Arrays are used to process many value easily and quickly.
■ The values stored in an array can be sorted easily.
■ The search process can be applied on arrays easily.
6. ARRAYS & Matrices
SK Ahsan
Types of Arrays:
–One-Dimensional Array
–Two-Dimensional Array
–N-Dimensional Array
7. ARRAYS & Matrices
SK Ahsan
One-D Array
A type of array in which all elements are arranged in the form of a list is known as 1-D array or
single dimensional array or linear list.
Declaring 1-DArray:
data_type identifier[length]; e.g: int marks[5];
o Data _type: Data type of values to be stored in the array.
o Identifier: Name of the array.
o Length: Number of elements.
8. ARRAYS & Matrices
SK Ahsan
ARRAY INITIALIZATION
■ Initializing arrays
– For loop
■ Set each element
– Initializer list
■ Specify each element when array declared
int n[ 5 ] = { 1, 2, 3, 4, 5 };
■ If not enough initializers, rightmost elements 0
■ If too many syntax error
– To set every element to same value
int n[ 5 ] = { 0 };
– If array size omitted, initializers determine size
int n[] = { 1, 2, 3, 4, 5 };
■ 5 initializers, therefore 5 element array
8
9. ARRAYS & Matrices
SK Ahsan
One-D array Intialization
The process of assigning values to array elements at the time of array declaration is called array
initialization.
Syntax:
data_type identifier[length]={ List of values }; e.g: int marks[5]={70,54,82,96,49};
o Data _type: Data type of values to be stored in the array.
o Identifier: Name of the array.
o Length: Number of elements
o List of values: Values to initialize the array. Initializing values must be constant
70 54 82 96 49
10. ARRAYS & Matrices
SK Ahsan
Accessing element of array
■ Individual Element:
Array_name[index];
■ Using Loop:
int marks[5];
for(int i=0;i<=4;i++)
marks[i]=i;
11. ARRAYS & Matrices
SK Ahsan
INITIALIZE AND ACCESS INDIVIDUAL INDEX
// This program displays the number of days in each month.
// It uses a 12-element int array.
#include <iostream.h>
void main(void)
{
int days[12];
days[0] = 31; // January
days[1] = 28; // February
days[2] = 31; // March
days[3] = 30; // April
days[4] = 31; // May
days[5] = 30; // June
days[6] = 31; // July
12. ARRAYS & Matrices
SK Ahsan
Cont…
days[7] = 31; // August
days[8] = 30; // September
days[9] = 31; // October
days[10] = 30; // November
days[11] = 31; // December
for (int count = 0; count < 12; count++)
{
cout << "Month " << (count + 1) << " has ";
cout << days[count] << " days.n";
}
}
13. ARRAYS & Matrices
SK Ahsan
Output
Month 1 has 31 days.
Month 2 has 28 days.
Month 3 has 31 days.
Month 4 has 30 days.
Month 5 has 31 days.
Month 6 has 30 days.
Month 7 has 31 days.
Month 8 has 31 days.
Month 9 has 30 days.
Month 10 has 31 days.
Month 11 has 30 days.
Month 12 has 31 days.
14. ARRAYS & Matrices
SK Ahsan
PARTIAL ARRAY INITIALIZATION
// This program displays the number of days in each month.
// It uses a 12-element int array.
#include <iostream.h>
void main(void)
{
int days[12] = {31, 28, 31, 30,
31, 30, 31, 31,
30, 31, 30, 31};
for (int count = 0; count < 12; count++)
{
cout << "Month " << (count + 1) << " has ";
cout << days[count] << " days.n";
}
}
15. ARRAYS & Matrices
SK Ahsan
OUTPUT
Month 1 has 31 days.
Month 2 has 28 days.
Month 3 has 31 days.
Month 4 has 30 days.
Month 5 has 31 days.
Month 6 has 30 days.
Month 7 has 31 days.
Month 8 has 31 days.
Month 9 has 30 days.
Month 10 has 31 days.
Month 11 has 30 days.
Month 12 has 31 days.
15
16. ARRAYS & Matrices
SK Ahsan
Print ASCIIValues
// This program uses an array of ten characters to store the
// first ten letters of the alphabet. The ASCII codes of the
// characters are displayed.
#include <iostream.h>
void main(void)
{
char letters[10] = {'A', 'B', 'C', 'D', 'E',
'F', 'G', 'H', 'I', 'J'};
cout << "Character" << "t" << "ASCII Coden";
cout << "--------" << "t" << "----------n";
for (int count = 0; count < 10; count++)
{
cout << letters[count] << "tt";
cout << int(letters[count]) << endl;
}
}
16
17. ARRAYS & Matrices
SK Ahsan
Output
Character ASCII Code
--------- ----------
A 65
B 66
C 67
D 68
E 69
F 70
G 71
H 72
I 73
J 74
18. ARRAYS & Matrices
SK Ahsan
// Histogram printing program.
#include <iostream>
#include <iomanip>
using std::setw;
int main() {
const int arraySize = 10;
int n[ arraySize ] = { 19, 3, 15, 7, 11, 9, 13, 5, 17, 1 };
cout << "Element" << setw( 13 ) << "Value"<< setw( 17 ) << "Histogram"<< endl;
// for each element of array n, output a bar in histogram
for ( int i = 0; i < arraySize; i++ ) {
cout << setw( 7 ) << i << setw( 13 )<< n[ i ] << setw( 9 );
for ( int j = 0; j < n[ i ]; j++ ) // print one bar
cout << '*';
cout << endl; // start next line of output
} // end outer for structure
return 0; // indicates successful termination
} // end main
PRINT HISTOGRAM
Element Value Histogram
0 19 *******************
1 3 ***
2 15 ***************
3 7 *******
4 11 ***********
5 9 *********
6 13 *************
7 5 *****
8 17 *****************
9 1 *
19. ARRAYS & Matrices
SK Ahsan
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(){
float a[] = { 22.2,44.4, 66.6 };
float x=11.1;
cout << "I m going to Crash " << endl;
cin >> x;
a[3333] = 88.8; // ERROR: index is out of bounds!
system("PAUSE"); return 0;
}
ARRAY OUT OF BOUND
20. ARRAYS & Matrices
SK Ahsan
Searching In Array
Searching is a process of finding the required data in the array. Searching becomes more
important when the length of the array is very large.
There are two techniques to searching elements in array as follows:
■ Sequential search
■ Binary search
21. ARRAYS & Matrices
SK Ahsan
Sequential Search
Sequential search is also known as linear or serial search. It follows the following step to search a
value in array.
– Visit the first element of array and compare its value with required value.
– If the value of array matches with the desired value, the search is complete.
– If the value of array does not match, move to next element an repeat same process.
22. ARRAYS & Matrices
SK Ahsan
Binary Search
Binary search is a quicker method of searching for value in the array. Binary search is very quick but
it can only search an sorted array. It cannot be applied on an unsorted array.
o It locates the middle element of array and compare with desired number.
o If they are equal, search is successful and the index of middle element is returned.
o If they are not equal, it reduces the search to half of the array.
o If the search number is less than the middle element, it searches the first half of array.
Otherwise it searches the second half of the array.The process continues until the required
number is found or loop completes without successful search.
23. ARRAYS & Matrices
SK Ahsan
Sorting Arrays
Sorting is a process of arranging the value of array in a particular order. An array can be sorted
in two order.
o Ascending Order
o DescendingOrder
12 25 33 37 48
48 37 33 25 12
24. ARRAYS & Matrices
SK Ahsan
Techniques Of Sorting Array
There are two techniques of sorting array:
o Selection Sort
o Bubble Sort
25. ARRAYS & Matrices
SK Ahsan
Selection Sort
Selection sort is a technique that sort an array. It selects an element in the array and moves it
to its proper position. Selection sort works as follows:
1. Find the minimum value in the list.
2. Swap it with value in the first position.
3. Sort the remainder of the list excluding the first value.
26. ARRAYS & Matrices
SK Ahsan
Bubble Sort
Bubble Sort is also known as exchange sort. It repeatedly visits the array and compares two
items at a time. It works as follows:
o Compare adjacent element. If the first is greater than the second, swap them.
o Repeat this for each pair of adjacent element, starting with the first two and ending
with the last two. (at this point last element should be greatest).
o Repeat the step for all elements except the last one.
o Keep repeating for one fewer element each time until there are no pairs to compare.
27. ARRAYS & Matrices
SK Ahsan
Two-D Arrays
Two-D array can be considered as table that consists of rows and columns. Each element in 2-D array
is refered with the help of two indexes. One index indicates row and second indicates the column.
Declaring 2-D Array:
Data_type Identifier[row][column];
e.g: int arr[4][3];
o Data _type: Data type of values to be stored in the array.
o Identifier: Name of the array.
o Rows : # of Rows in the table of array.
o Column : # of Columns in the table of array.
0,0 0,1 0,2
1,0 1,1 1,2
2,0 2,1 2,2
3,0 3,1 3,2
28. ARRAYS & Matrices
SK Ahsan
Two-D array Intialization
The two-D array can also be initialized at the time of declaration. Initialization is performed by assigning
the initial values in braces seperated by commas.
Some important points :
o The elements of each row are enclosed within braces and seperated by comma.
o All rows are enclosed within braces.
o For number arrays, if all elements are not specified , the un specified elements are initialized by
zero.
30. ARRAYS & Matrices
SK Ahsan
Case Study: Computing Mean, Median and Mode
Using Arrays
■ Mean
– Average (sum/number of elements)
■ Median
– Number in middle of sorted list
– 1, 2, 3, 4, 5 (3 is median)
– If even number of elements, take average of middle two
■ Mode
– Number that occurs most often
– 1, 1, 1, 2, 3, 3, 4, 5 (1 is mode)
31. ARRAYS & Matrices
SK Ahsan
Case Study
■Find Set Properties
–Set Union
–Set Differences