Masyvas yra panašaus tipo elementų grupė, turinti gretimą atminties vietą. Masyvas yra panašaus tipo kintamųjų, kurie nurodomi bendru pavadinimu, rinkinys.
Šioje pamokoje trumpai sužinosite, kaip saugoti vertę masyve dažniausiai vartojamomis kalbomis.
dateformat.format java
1. C Kalba
Visi masyvai yra gretimi atminties vietų blokai. Pagal numatytuosius nustatymus žemiausioje masyvo pozicijoje saugomas pirmasis elementas, o aukščiausioje – paskutiniai duomenys. C kalboje masyvas deklaruojamas nurodant elemento tipą ir bendrą masyvo ilgį, reikalingą duomenims saugoti.
Masyvo deklaravimo sintaksė
type arrayName [ arrSize ];
Sintaksė inicijuojant masyvo reikšmes saugoti
double balance[6] = {500.0, 52.0, 63.6, 77.80, 70.10, 80.12}; Pavyzdys
#include int main () { int n[ 11 ]; /* declaring an array comprising of 11 integers */ int i,j; /* initialize elements of array n to 0 */ for ( i = 0; i <11; 100 i++ ) { n[ i ]="i" + 10; * storing or initializing the array at location with element } result of element's value for (j="0;" j < 11; j++ printf('element stored position [%d]="%d
'," j, n[j] ); return 0; pre> <p> <strong>Output</strong> </p> <pre> Element stored at position [0] = 10 Element stored at position [1] = 11 Element stored at position [2] = 12 Element stored at position [3] = 13 Element stored at position [4] = 14 Element stored at position [5] = 15 Element stored at position [6] = 16 Element stored at position [7] = 17 Element stored at position [8] = 18 Element stored at position [9] = 19 Element stored at position [10] = 20 </pre> <h3>Multidimensional Array in C</h3> <p>In C language, the elements of a 2 D (two-dimensional) array are accessed with the help of subscripts, i.e., the row index number and the column index number of the array.</p> <p> <strong>Syntax for declaring Array</strong> </p> <pre> int val = arr[x][y]; </pre> <p> <strong>Syntax for Initializing Two-Dimensional Arrays</strong> </p> <pre> int a[1][4] = { {4, 4, 2, 1} , /* initializers for row indexed by 0 */ {4, 5, 16, 10} , /* initializers for row indexed by 1 */ {8, 19, 10, 11} /* initializers for row indexed by 2 */ }; </pre> <p> <strong></strong> </p> <pre> #include int main () { /* declaring and initializing the array with 4 rows and 2 columns*/ int arr[4][2] = { {1,0}, {1,2}, {2,4}, {3,6}}; int i, j; /* output each array element's value */ for ( i = 0; i <4; i++ ) { for ( j="0;" < 2; j++ printf(' data stored in 2d array[%d][%d]="%d
'," i,j, arr[i][j] ); } return 0; pre> <p> <strong>Output</strong> </p> <pre> Data stored in 2D array[0][0] = 1 Data stored in 2D array[0][1] = 0 Data stored in 2D array[1][0] = 1 Data stored in 2D array[1][1] = 2 Data stored in 2D array[2][0] = 2 Data stored in 2D array[2][1] = 4 Data stored in 2D array[3][0] = 3 Data stored in 2D array[3][1] = 6 </pre> <h2>2. C++ Language</h2> <p>In C++ language the user needs to specify the element type and total length of array.</p> <p> <strong>Syntax to Declare Array</strong> </p> <pre> type arrName [ arrSize ]; </pre> <p> <strong>Syntax to initialize array</strong> </p> <pre> int arr[] = { 1, 2, 3, 4, 5 } </pre> <p> <strong>Example</strong> </p> <pre> #include using namespace std; int main () { // declaring an array with 4 rows. int arr[4] = {1,7,50,6}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) { cout << 'array at position[' i ']: '; arr[i]<< endl; } return 0; < pre> <p> <strong>Output</strong> </p> <pre> array at position[0]: 1 array at position[1]: 7 array at position[2]: 50 array at position[3]: 6 </pre> <h3>Multidimensional Array</h3> <p>C++ language also enables the Multidimensional arrays.</p> <p> <strong>Syntax for initializing 2D array</strong> </p> <pre> int a[4][3] = { {0, 1, 2} , /* storing data in array for row indexed by 0 */ {42, 25, 62} , /* storing data in array for row indexed by 1 */ {18, 90, 15}, /* storing data in array for row indexed by 2 */ {21, 19, 25}, /* storing data in array for row indexed by 3 */ }; </pre> <p> <strong>Example</strong> </p> <pre> #include using namespace std; int main () { // declaring an array with 4 rows and 2 columns. int arr[4][2] = { {1,0}, {0,2}, {2,3}, {5,6}}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) for ( int j="0;" < 2; j++ { cout << 'array at position[' i '][' ']: '; arr[i][j]<< endl; } return 0; pre> <p> <strong>Output</strong> </p> <pre> array at position[0][0]: 1 array at position[0][1]: 0 array at position[1][0]: 0 array at position[1][1]: 2 array at position[2][0]: 2 array at position[2][1]: 3 array at position[3][0]: 5 array at position[3][1]: 6 </pre> <h2>3. Java</h2> <p>In Java language, Arrays work differently than what they used to do in C or C++ language.</p> <h3>One-Dimensional Arrays:</h3> <p>To declare an array, the user needs to have two primary components: the type and the array's name.</p> <p>The 'Type' refers to the elementary type of a specific array. It determines the data type of all elements that are included in the array. It comprises the array of primitive data types, unlike integers, char, float, double, etc., or it could include the user-defined data types (objects of a class) as well. Therefore, the element type for the array concludes what kind of data the array will contain.</p> <p> <strong>Syntax</strong> </p> <pre> type arr_var_name[]; OR type[] arr_var_name; OR var-name = new type [size]; </pre> <p> <strong>Store values in one-dimensional array</strong> </p> <p>Assigning values to an element in an array is similar to assigning values to scalar variables.</p> <pre> Array [index]= initializers; arr[1]= 50 arr[2]= 20 </pre> <h4>NOTE: It the array element is not assigned any value, by default it has a Null (empty) value.</h4> <p> <strong>Example</strong> </p> <pre> //Java Program to demonstrate how to initialize, store and display //values in one-dimensional arrays. class Testarray{ public static void main(String args[]){ int arr[]=new int[5];//declaration and instantiation arr[0]=20;//initialization of the array arr[1]=40; arr[2]=60; arr[3]=80; arr[4]=100; //traversing array to print the array values for(int i=0;i <arr.length;i++) system.out.println(arr[i]); }} < pre> <p> <strong>Output</strong> </p> <pre> 20 40 60 80 100 </pre> <h3>Arrays of Objects</h3> <p>An array of objects is constructed in the same way as an array of primitive type data elements.</p> <p> <strong>Example</strong> </p> <pre> // Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println('element at ' + i : arr[i].id_no +' '+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + ' '); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; echo 'Reema's Marks: '.$marks ['Reema '].' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].' '; } echo ' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;></pre></arr.length;i++)></pre></4;></pre></4;></pre></4;></pre></11;> Daugiamatis masyvas C
C kalba prie 2 D (dvimačio) masyvo elementų pasiekiami apatiniai indeksai, t.y. masyvo eilutės indekso numeris ir stulpelio indekso numeris.
Masyvo deklaravimo sintaksė
int val = arr[x][y];
Sintaksė, skirta dvimačių masyvų inicijavimui
int a[1][4] = { {4, 4, 2, 1} , /* initializers for row indexed by 0 */ {4, 5, 16, 10} , /* initializers for row indexed by 1 */ {8, 19, 10, 11} /* initializers for row indexed by 2 */ };
#include int main () { /* declaring and initializing the array with 4 rows and 2 columns*/ int arr[4][2] = { {1,0}, {1,2}, {2,4}, {3,6}}; int i, j; /* output each array element's value */ for ( i = 0; i <4; i++ ) { for ( j="0;" < 2; j++ printf(\' data stored in 2d array[%d][%d]="%d
'," i,j, arr[i][j] ); } return 0; pre> <p> <strong>Output</strong> </p> <pre> Data stored in 2D array[0][0] = 1 Data stored in 2D array[0][1] = 0 Data stored in 2D array[1][0] = 1 Data stored in 2D array[1][1] = 2 Data stored in 2D array[2][0] = 2 Data stored in 2D array[2][1] = 4 Data stored in 2D array[3][0] = 3 Data stored in 2D array[3][1] = 6 </pre> <h2>2. C++ Language</h2> <p>In C++ language the user needs to specify the element type and total length of array.</p> <p> <strong>Syntax to Declare Array</strong> </p> <pre> type arrName [ arrSize ]; </pre> <p> <strong>Syntax to initialize array</strong> </p> <pre> int arr[] = { 1, 2, 3, 4, 5 } </pre> <p> <strong>Example</strong> </p> <pre> #include using namespace std; int main () { // declaring an array with 4 rows. int arr[4] = {1,7,50,6}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) { cout << \'array at position[\' i \']: \'; arr[i]<< endl; } return 0; < pre> <p> <strong>Output</strong> </p> <pre> array at position[0]: 1 array at position[1]: 7 array at position[2]: 50 array at position[3]: 6 </pre> <h3>Multidimensional Array</h3> <p>C++ language also enables the Multidimensional arrays.</p> <p> <strong>Syntax for initializing 2D array</strong> </p> <pre> int a[4][3] = { {0, 1, 2} , /* storing data in array for row indexed by 0 */ {42, 25, 62} , /* storing data in array for row indexed by 1 */ {18, 90, 15}, /* storing data in array for row indexed by 2 */ {21, 19, 25}, /* storing data in array for row indexed by 3 */ }; </pre> <p> <strong>Example</strong> </p> <pre> #include using namespace std; int main () { // declaring an array with 4 rows and 2 columns. int arr[4][2] = { {1,0}, {0,2}, {2,3}, {5,6}}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) for ( int j="0;" < 2; j++ { cout << \'array at position[\' i \'][\' \']: \'; arr[i][j]<< endl; } return 0; pre> <p> <strong>Output</strong> </p> <pre> array at position[0][0]: 1 array at position[0][1]: 0 array at position[1][0]: 0 array at position[1][1]: 2 array at position[2][0]: 2 array at position[2][1]: 3 array at position[3][0]: 5 array at position[3][1]: 6 </pre> <h2>3. Java</h2> <p>In Java language, Arrays work differently than what they used to do in C or C++ language.</p> <h3>One-Dimensional Arrays:</h3> <p>To declare an array, the user needs to have two primary components: the type and the array's name.</p> <p>The 'Type' refers to the elementary type of a specific array. It determines the data type of all elements that are included in the array. It comprises the array of primitive data types, unlike integers, char, float, double, etc., or it could include the user-defined data types (objects of a class) as well. Therefore, the element type for the array concludes what kind of data the array will contain.</p> <p> <strong>Syntax</strong> </p> <pre> type arr_var_name[]; OR type[] arr_var_name; OR var-name = new type [size]; </pre> <p> <strong>Store values in one-dimensional array</strong> </p> <p>Assigning values to an element in an array is similar to assigning values to scalar variables.</p> <pre> Array [index]= initializers; arr[1]= 50 arr[2]= 20 </pre> <h4>NOTE: It the array element is not assigned any value, by default it has a Null (empty) value.</h4> <p> <strong>Example</strong> </p> <pre> //Java Program to demonstrate how to initialize, store and display //values in one-dimensional arrays. class Testarray{ public static void main(String args[]){ int arr[]=new int[5];//declaration and instantiation arr[0]=20;//initialization of the array arr[1]=40; arr[2]=60; arr[3]=80; arr[4]=100; //traversing array to print the array values for(int i=0;i <arr.length;i++) system.out.println(arr[i]); }} < pre> <p> <strong>Output</strong> </p> <pre> 20 40 60 80 100 </pre> <h3>Arrays of Objects</h3> <p>An array of objects is constructed in the same way as an array of primitive type data elements.</p> <p> <strong>Example</strong> </p> <pre> // Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println(\'element at \' + i : arr[i].id_no +\' \'+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \' \'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\'Reema \']=\'95\'; $marks[\'John\']=\'45\'; $marks [\'Rahul \']=\'20\'; echo \'Reema\'s Marks: \'.$marks [\'Reema \'].\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\'Reema\',95), array(2,\'john\',45), array(3,\'rahul\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\' \'; } echo \' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;></pre></arr.length;i++)></pre></4;></pre></4;></pre></4;> 2. C++ kalba
C++ kalboje vartotojas turi nurodyti elemento tipą ir bendrą masyvo ilgį.
Sintaksė deklaruoti masyvą
type arrName [ arrSize ];
Sintaksė masyvo inicijavimui
int arr[] = { 1, 2, 3, 4, 5 } Pavyzdys
#include using namespace std; int main () { // declaring an array with 4 rows. int arr[4] = {1,7,50,6}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) { cout << \'array at position[\' i \']: \'; arr[i]<< endl; } return 0; < pre> <p> <strong>Output</strong> </p> <pre> array at position[0]: 1 array at position[1]: 7 array at position[2]: 50 array at position[3]: 6 </pre> <h3>Multidimensional Array</h3> <p>C++ language also enables the Multidimensional arrays.</p> <p> <strong>Syntax for initializing 2D array</strong> </p> <pre> int a[4][3] = { {0, 1, 2} , /* storing data in array for row indexed by 0 */ {42, 25, 62} , /* storing data in array for row indexed by 1 */ {18, 90, 15}, /* storing data in array for row indexed by 2 */ {21, 19, 25}, /* storing data in array for row indexed by 3 */ }; </pre> <p> <strong>Example</strong> </p> <pre> #include using namespace std; int main () { // declaring an array with 4 rows and 2 columns. int arr[4][2] = { {1,0}, {0,2}, {2,3}, {5,6}}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) for ( int j="0;" < 2; j++ { cout << \'array at position[\' i \'][\' \']: \'; arr[i][j]<< endl; } return 0; pre> <p> <strong>Output</strong> </p> <pre> array at position[0][0]: 1 array at position[0][1]: 0 array at position[1][0]: 0 array at position[1][1]: 2 array at position[2][0]: 2 array at position[2][1]: 3 array at position[3][0]: 5 array at position[3][1]: 6 </pre> <h2>3. Java</h2> <p>In Java language, Arrays work differently than what they used to do in C or C++ language.</p> <h3>One-Dimensional Arrays:</h3> <p>To declare an array, the user needs to have two primary components: the type and the array's name.</p> <p>The 'Type' refers to the elementary type of a specific array. It determines the data type of all elements that are included in the array. It comprises the array of primitive data types, unlike integers, char, float, double, etc., or it could include the user-defined data types (objects of a class) as well. Therefore, the element type for the array concludes what kind of data the array will contain.</p> <p> <strong>Syntax</strong> </p> <pre> type arr_var_name[]; OR type[] arr_var_name; OR var-name = new type [size]; </pre> <p> <strong>Store values in one-dimensional array</strong> </p> <p>Assigning values to an element in an array is similar to assigning values to scalar variables.</p> <pre> Array [index]= initializers; arr[1]= 50 arr[2]= 20 </pre> <h4>NOTE: It the array element is not assigned any value, by default it has a Null (empty) value.</h4> <p> <strong>Example</strong> </p> <pre> //Java Program to demonstrate how to initialize, store and display //values in one-dimensional arrays. class Testarray{ public static void main(String args[]){ int arr[]=new int[5];//declaration and instantiation arr[0]=20;//initialization of the array arr[1]=40; arr[2]=60; arr[3]=80; arr[4]=100; //traversing array to print the array values for(int i=0;i <arr.length;i++) system.out.println(arr[i]); }} < pre> <p> <strong>Output</strong> </p> <pre> 20 40 60 80 100 </pre> <h3>Arrays of Objects</h3> <p>An array of objects is constructed in the same way as an array of primitive type data elements.</p> <p> <strong>Example</strong> </p> <pre> // Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println(\'element at \' + i : arr[i].id_no +\' \'+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \' \'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\'Reema \']=\'95\'; $marks[\'John\']=\'45\'; $marks [\'Rahul \']=\'20\'; echo \'Reema\'s Marks: \'.$marks [\'Reema \'].\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\'Reema\',95), array(2,\'john\',45), array(3,\'rahul\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\' \'; } echo \' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;></pre></arr.length;i++)></pre></4;></pre></4;> Daugiamatis masyvas
C++ kalba taip pat įgalina daugiamačius masyvus.
Sintaksė 2D masyvo inicijavimui
int a[4][3] = { {0, 1, 2} , /* storing data in array for row indexed by 0 */ {42, 25, 62} , /* storing data in array for row indexed by 1 */ {18, 90, 15}, /* storing data in array for row indexed by 2 */ {21, 19, 25}, /* storing data in array for row indexed by 3 */ }; Pavyzdys
#include using namespace std; int main () { // declaring an array with 4 rows and 2 columns. int arr[4][2] = { {1,0}, {0,2}, {2,3}, {5,6}}; // traversing the output for each array value for ( int i = 0; i <4; i++ ) for ( int j="0;" < 2; j++ { cout << \'array at position[\' i \'][\' \']: \'; arr[i][j]<< endl; } return 0; pre> <p> <strong>Output</strong> </p> <pre> array at position[0][0]: 1 array at position[0][1]: 0 array at position[1][0]: 0 array at position[1][1]: 2 array at position[2][0]: 2 array at position[2][1]: 3 array at position[3][0]: 5 array at position[3][1]: 6 </pre> <h2>3. Java</h2> <p>In Java language, Arrays work differently than what they used to do in C or C++ language.</p> <h3>One-Dimensional Arrays:</h3> <p>To declare an array, the user needs to have two primary components: the type and the array's name.</p> <p>The 'Type' refers to the elementary type of a specific array. It determines the data type of all elements that are included in the array. It comprises the array of primitive data types, unlike integers, char, float, double, etc., or it could include the user-defined data types (objects of a class) as well. Therefore, the element type for the array concludes what kind of data the array will contain.</p> <p> <strong>Syntax</strong> </p> <pre> type arr_var_name[]; OR type[] arr_var_name; OR var-name = new type [size]; </pre> <p> <strong>Store values in one-dimensional array</strong> </p> <p>Assigning values to an element in an array is similar to assigning values to scalar variables.</p> <pre> Array [index]= initializers; arr[1]= 50 arr[2]= 20 </pre> <h4>NOTE: It the array element is not assigned any value, by default it has a Null (empty) value.</h4> <p> <strong>Example</strong> </p> <pre> //Java Program to demonstrate how to initialize, store and display //values in one-dimensional arrays. class Testarray{ public static void main(String args[]){ int arr[]=new int[5];//declaration and instantiation arr[0]=20;//initialization of the array arr[1]=40; arr[2]=60; arr[3]=80; arr[4]=100; //traversing array to print the array values for(int i=0;i <arr.length;i++) system.out.println(arr[i]); }} < pre> <p> <strong>Output</strong> </p> <pre> 20 40 60 80 100 </pre> <h3>Arrays of Objects</h3> <p>An array of objects is constructed in the same way as an array of primitive type data elements.</p> <p> <strong>Example</strong> </p> <pre> // Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println(\'element at \' + i : arr[i].id_no +\' \'+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \' \'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\'Reema \']=\'95\'; $marks[\'John\']=\'45\'; $marks [\'Rahul \']=\'20\'; echo \'Reema\'s Marks: \'.$marks [\'Reema \'].\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\'Reema\',95), array(2,\'john\',45), array(3,\'rahul\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\' \'; } echo \' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;></pre></arr.length;i++)></pre></4;> 3. Java
Java kalboje masyvai veikia kitaip nei C arba C++ kalbomis.
Vienmačiai masyvai:
Norėdami deklaruoti masyvą, vartotojas turi turėti du pagrindinius komponentus: tipą ir masyvo pavadinimą.
„Tipas“ reiškia elementarų konkretaus masyvo tipą. Jis nustato visų į masyvą įtrauktų elementų duomenų tipą. Jį sudaro primityvių duomenų tipų masyvas, skirtingai nei sveikieji skaičiai, char, float, double ir t. t., arba jis taip pat gali apimti vartotojo apibrėžtus duomenų tipus (klasės objektus). Todėl masyvo elemento tipas daro išvadą, kokie duomenys bus masyve.
Sintaksė
type arr_var_name[]; OR type[] arr_var_name; OR var-name = new type [size];
Išsaugokite vertes vienmačiame masyve
Vertybių priskyrimas elementui masyve yra panašus į reikšmių priskyrimą skaliariniams kintamiesiems.
Array [index]= initializers; arr[1]= 50 arr[2]= 20
PASTABA: masyvo elementui nėra priskirta jokia reikšmė, pagal numatytuosius nustatymus jis turi Null (tuščia) reikšmę.
Pavyzdys
//Java Program to demonstrate how to initialize, store and display //values in one-dimensional arrays. class Testarray{ public static void main(String args[]){ int arr[]=new int[5];//declaration and instantiation arr[0]=20;//initialization of the array arr[1]=40; arr[2]=60; arr[3]=80; arr[4]=100; //traversing array to print the array values for(int i=0;i <arr.length;i++) system.out.println(arr[i]); }} < pre> <p> <strong>Output</strong> </p> <pre> 20 40 60 80 100 </pre> <h3>Arrays of Objects</h3> <p>An array of objects is constructed in the same way as an array of primitive type data elements.</p> <p> <strong>Example</strong> </p> <pre> // Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println(\'element at \' + i : arr[i].id_no +\' \'+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \' \'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\'Reema \']=\'95\'; $marks[\'John\']=\'45\'; $marks [\'Rahul \']=\'20\'; echo \'Reema\'s Marks: \'.$marks [\'Reema \'].\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\'Reema\',95), array(2,\'john\',45), array(3,\'rahul\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\' \'; } echo \' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;></pre></arr.length;i++)> Objektų masyvai
Objektų masyvas konstruojamas taip pat, kaip ir primityvaus tipo duomenų elementų masyvas.
Pavyzdys
// Java program to create, store and display values for one-dimensional // array of objects class Employee { public int id_no; public String name; Employee(int id_no, String name) { this.id_no = id_no; this.name = name; } } // The Elements of the array are objects of a class Employee. public class Array_Objects_Example { public static void main (String[] args) { // declares an Array of integers. Employee[] arr; // assigning space for 5 objects of type Employee. arr = new Employee[5]; // storing the value for the first element of the array arr[0] = new Employee(111,'Varun'); // storing the value for the second elements of the array arr[1] = new Employee(121,'Sukla'); // so on... arr[2] = new Employee(131,'Virat'); arr[3] = new Employee(141,'Anuskha'); arr[4] = new Employee(151,'Mohit'); // accessing the elements of the specified array for (int i = 0; i <arr.length; i++) system.out.println(\\'element at \\' + i : arr[i].id_no +\\' \\'+ arr[i].name); } < pre> <p> <strong>Output</strong> </p> <pre> Element at 0 : 111 Varun Element at 1 : 121 Sukla Element at 2 : 131 Virat Element at 3 : 141 Anuskha Element at 4 : 151 Mohit </pre> <h3>Multidimensional Arrays</h3> <p>Multidimensional arrays are termed 'arrays of arrays' as they can hold each element of an array with the reference of another array. These are also known as Jagged Arrays. A multidimensional array is constructed by adding a set of square brackets ([]) per dimension.</p> <p> <strong>Syntax</strong> </p> <pre> int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array </pre> <p> <strong>Example to store values in a Multidimensional Array</strong> </p> <pre> arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90; </pre> <p> <strong>Example of Multidimensional Array</strong> </p> <pre> class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \\' \\'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\\'Reema \\']=\\'95\\'; $marks[\\'John\\']=\\'45\\'; $marks [\\'Rahul \\']=\\'20\\'; echo \\'Reema\\'s Marks: \\'.$marks [\\'Reema \\'].\\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\\'Reema\\',95), array(2,\\'john\\',45), array(3,\\'rahul\\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\\' \\'; } echo \\' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3></pre></arr.length;> Daugiamačiai masyvai
Daugiamačiai masyvai vadinami „masyvo masyvais“, nes juose gali būti kiekvienas masyvo elementas su kito masyvo nuoroda. Jie taip pat žinomi kaip Jagged Arrays. Daugiamatis masyvas sudaromas pridedant laužtinius skliaustus ([]) kiekvienam matmeniui.
Sintaksė
int[][] intArray = new int[10][20]; //a 2D array or matrix int[][][] intArray = new int[10][20][10]; //a 3D array
Pavyzdys, kaip saugoti reikšmes daugiamačiame masyve
arry[0][0]=10; arry[0][1]=20; arry[0][2]=30; arry[1][0]=40; arry[1][1]=50; arry[1][3]=60; arry[2][1]=70; arry[2][2]=80; arry[2][3]=90;
Daugiamačio masyvo pavyzdys
class multiDimensional_Example { public static void main(String args[]) { // declaring and storing data in 2-Dimensional array int arry[][] = { {12,17,19},{32,62,12},{37,34,32} }; // traversing and printing the 2-Dimensional array for (int i=0; i<3 3 ; i++) { for (int j="0;" < j++) system.out.print(arry[i][j] + \\' \\'); system.out.println(); } pre> <p> <strong>Output</strong> </p> <pre> 12 17 19 32 62 12 37 34 32 </pre> <h2>4. PHP</h2> <p>PHP array is an ordered map (holds elements on the base of the key-value). It is utilized to hold multiple values of a similar data type in a single variable.</p> <p>PHP contains 3 kinds of array that are as follows:</p> <ol class="points"> <li>Indexed Array</li> <li>Associative Array</li> <li>Multidimensional Array</li> </ol> <h3>1. Indexed Array</h3> <p>PHP index is described by an integer number that begins with 0 (default value). The PHP array can store any data type, such as numbers, characters, strings, and objects. All PHP array data are allocated an index number by default.</p> <p> <strong>Syntax to store values</strong> </p> <pre> $Colour =array('Red', 'White', 'Black', 'Yellow'); </pre> <p> <strong>Or</strong> </p> <pre> $Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow'; </pre> <p> <strong>Example</strong> </p> <pre> </pre> <p> <strong>Output</strong> </p> <pre> Colours are: Red, White, Black, Yellow </pre> <h3>2. Associative Array</h3> <p>In PHP, the user can associate any specific name with each array elements using the '=>' symbol.</p> <p> <strong>Syntax</strong> </p> <pre> $marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20'); </pre> <p> <strong>Or</strong> </p> <pre> $marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20'; </pre> <p> <strong>Example</strong> </p> <pre> <?php $marks[\\'Reema \\']=\\'95\\'; $marks[\\'John\\']=\\'45\\'; $marks [\\'Rahul \\']=\\'20\\'; echo \\'Reema\\'s Marks: \\'.$marks [\\'Reema \\'].\\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?> </pre> <p> <strong>Output</strong> </p> <pre> Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20 </pre> <h3>3. Multidimensional Array</h3> <p>Multidimensional arrays in PHP are also termed as 'array of arrays'. It enabled the user to store array data in a tabular format. PHP multidimensional array can be expressed in the form of a matrix which is denoted by row * column.</p> <p> <strong>Syntax</strong> </p> <pre> $emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) ); </pre> <p> <strong>Example</strong> </p> <pre> <?php $emp = array ( array (1,\\'Reema\\',95), array(2,\\'john\\',45), array(3,\\'rahul\\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\\' \\'; } echo \\' <br/>'; } ?> </pre> <p> <strong>Output</strong> </p> <pre> 1 Reema 95 2 john 45 3 rahul 20 </pre> <h2>5. Python</h2> <p>Python uses a module named 'Array' to handle all the functions of Arrays in Python. It is helpful when the user wants to manipulate only particular data values. Given below are the keywords that are important to learn the concept of an array in Python:</p> <ul> <li>Element - Any data stored in an array is known an element.</li> <li>Index - Whenever an array stores any data, it has some numerical location known as index that is beneficial to identify the location of the element.</li> </ul> <p> <strong>Syntax</strong> </p> <pre> from array import * arrayName = array(typecode, [data_to_be_initialized]) </pre> <p> <strong>Example</strong> </p> <pre> import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1]) </pre> <p> <strong>Output</strong> </p> <pre> First array value: 20 Second array value: 40 Second last array value: 80 </pre> <hr></3> 4. PHP
PHP masyvas yra sutvarkytas žemėlapis (sulaiko elementus rakto reikšmės pagrindu). Jis naudojamas kelioms panašaus tipo duomenų vertėms laikyti viename kintamajame.
PHP turi 3 rūšių masyvus, kurie yra tokie:
- Indeksuotas masyvas
- Asociatyvinis masyvas
- Daugiamatis masyvas
1. Indeksuotas masyvas
PHP indeksas apibūdinamas sveikuoju skaičiumi, kuris prasideda 0 (numatytoji reikšmė). PHP masyvas gali saugoti bet kokio tipo duomenis, pvz., skaičius, simbolius, eilutes ir objektus. Visiems PHP masyvo duomenims pagal numatytuosius nustatymus priskiriamas indekso numeris.
Vertybių saugojimo sintaksė
$Colour =array('Red', 'White', 'Black', 'Yellow');
Arba
$Colour[0]='Red '; $Colour[1]='White'; $Colour[2]='Black'; $Colour[3]='Yellow';
Pavyzdys
Išvestis
valstijos JAV
Colours are: Red, White, Black, Yellow
2. Asociatyvinis masyvas
PHP vartotojas gali susieti bet kokį konkretų pavadinimą su kiekvienu masyvo elementu, naudodamas simbolį „=>“.
Sintaksė
$marks =array('Reema'=>'95','John'=>'45','Rahul'=>'20');
Arba
$marks['Reema ']='95'; $marks['John']='45'; $marks ['Rahul ']='20';
Pavyzdys
<?php $marks[\\'Reema \\']=\\'95\\'; $marks[\\'John\\']=\\'45\\'; $marks [\\'Rahul \\']=\\'20\\'; echo \\'Reema\\'s Marks: \\'.$marks [\\'Reema \\'].\\' <br/>'; echo ' John's Marks: '.$marks['John'].' <br>'; echo ' Rahul's Marks: '.$marks ['Rahul '].' <br>'; ?>
Išvestis
Reema's Marks: 95 John's Marks: 45 Rahul's Marks: 20
3. Daugiamatis masyvas
Daugiamačiai masyvai PHP taip pat vadinami „masyvų masyvu“. Tai leido vartotojui saugoti masyvo duomenis lentelės formatu. PHP daugiamatis masyvas gali būti išreikštas matricos forma, kuri žymima eilute * stulpeliu.
Sintaksė
$emp = array ( array (1,'Reema',95), array(2,'john',45), array(3,'rahul',20) );
Pavyzdys
<?php $emp = array ( array (1,\\'Reema\\',95), array(2,\\'john\\',45), array(3,\\'rahul\\',20) ); for ($row = 0; $row < 3; $row++) { for ($col = 0; $col < 3; $col++) { echo $emp[$row][$col].\\' \\'; } echo \\' <br/>'; } ?> Išvestis
1 Reema 95 2 john 45 3 rahul 20
5. Python
„Python“ naudoja modulį, pavadintą „Array“, kad tvarkytų visas Python masyvo funkcijas. Tai naudinga, kai vartotojas nori manipuliuoti tik tam tikromis duomenų reikšmėmis. Toliau pateikiami raktiniai žodžiai, kurie yra svarbūs norint išmokti Python masyvo sąvoką:
- Elementas – visi masyve saugomi duomenys yra žinomi kaip elementas.
- Indeksas – kai masyvas saugo bet kokius duomenis, jis turi tam tikrą skaičių vietą, vadinamą indeksu, kuri yra naudinga nustatant elemento vietą.
Sintaksė
from array import * arrayName = array(typecode, [data_to_be_initialized])
Pavyzdys
import array as arry n = arry.array('i', [20, 40, 60, 80]) print('First array value:', n[0]) print('Second array value:', n[1]) print('Second last array value:', n[-1])
Išvestis
First array value: 20 Second array value: 40 Second last array value: 80