Panduan lengkap mengenai Tatasusunan Berbilang Dimensi di Jawa. Array ialah struktur Multidimensi data homogen yang merupakan koleksi elemen dengan jenis data yang serupa. Mereka disimpan di lokasi memori bersebelahan. Dalam tatasusunan, elemen pertama disimpan dalam indeks 0; elemen kedua disimpan dalam indeks 1, dan seterusnya. Tatasusunan boleh terdiri daripada satu dimensi atau berbilang dimensi. Dalam dokumen ini, kita akan melihat tatasusunan berbilang dimensi dalam Java. Tatasusunan berbilang dimensi ialah tatasusunan tatasusunan yang boleh memuatkan lebih daripada satu baris dan lajur. Sekarang, mari kita lihat sintaks dan pelaksanaan tatasusunan Berbilang dimensi dalam bahagian berikut.
IKLAN Kursus Popular dalam kategori ini JAVA MASTERY - Pengkhususan | 78 Siri Kursus | 15 Ujian Olok-olokSintaks:
data_type[dimension 1][dimension 2][]…[dimension n] array_name= new data_type[size 1][size 2]…[size n]
Tatasusunan Berbilang Dimensi yang paling biasa di Jawa ialah:
Susun atur 2D biasanya digunakan dalam permainan video platform seperti Super Mario untuk mewakili rupa bumi atau skrin. Ia juga boleh digunakan untuk melukis papan Catur, mewakili struktur seperti hamparan, dsb.
Kod:
int[][] array1 = new int[2][2];//Two dimensional Integer Array with 2 rows and 2 columns
Contoh:
9 10
7 66
Ini ialah tatasusunan 2D dengan dua baris dan dua lajur.
Tatasusunan Tiga Dimensi tidak biasa digunakan dalam aplikasi masa nyata. Oleh itu, tatasusunan dua dimensi juga diberi keutamaan dalam contoh pengaturcaraan.
Kod:
int[][][] array2 = new int[12][24][36]; //Three dimensional Array
Contoh:
6 8 66
66 65 47
46 89 98
Adalah mudah untuk memahami Tatasusunan Berbilang Dimensi dalam Java jika tatasusunan biasa diketahui. Tatasusunan berbilang dimensi boleh diisytiharkan seperti yang ditunjukkan di bawah:
Pertama, mari kita lihat pengisytiharan tatasusunan 2D:
Pastikan pengisytiharan yang betul dibuat semasa pengaturcaraan dalam Java.
Kod:
//Java Program to demonstrate the multidimensional 2D array public class MultidimensionalArray { public static void main(String args[]){ //2D array a is declared and initialized int a[][]={{2,2,3},{8,4,5},{9,4,5}}; //Print the array elements for(int i=0;i<3;i++){ for(int j=0;j<3;j++){ System.out.print(a[i][j]+" "); } System.out.println(); } }}
Output:
Pengisytiharan Tatasusunan Tiga Dimensi boleh dibincangkan.
Tatasusunan ini boleh terdiri daripada sebarang jenis data. Di bawah ialah beberapa tatasusunan tiga dimensi dengan jenis data yang berbeza.
Kod:
//Java Program to demonstrate the multidimensional array public class MultidimensionalArray { //main method public static void main(String[] args) { //3D array arr int[][][] arr = { { { 1 , -9 , 3 } ,{ 2 , 7 , 4 } } , { { -45 , -5 , 6 , 75 } , { 88 } , { 29 , 30 } } }; // for..each loop to iterate through the elements of the 3d array arr for (int[][] ar: arr) { for (int[] a: ar) { for(int finalarray: a) { System.out.println(finalarray); } } } } }
Output:
Tatasusunan berbilang dimensi boleh dimulakan dalam pelbagai cara:
In a more traditional way, Initializing Array elements can be as follows.
int[][][] a = { { { 11 , 23 , 30 }, { 5 ,65 , 70 } , { 0 , 80 , 10 } ,{ 10 , 12 , 450 } } ,{ { 33 , 2 , 4 } , {11, 66, 6}, {55, 11, 22}, {11, 57, 43} } };
In this case, even though the size of rows and columns are not mentioned, the java compiler is able to identify the size of rows and columns by counting the number of elements.
In the case of storing a large number of elements, Nested For Loop can be used as shown below:
int i, j, k; for(i = 0; i < 2; i++) { for(j = 0; j < 3; j++) { for(k = 0; k < 4; k++) { a[i][j][k] = i + j + k;} } }
int a= new int[3][2][4]; a[0][2][1]= 33; a[0][1][2]= 73; a[0][1][1]= 88;
A three-dimensional array of size 3 levels * 2 rows * 4 columns is created, but values are assigned to some positions only. Since none of the other elements does have any value assigned, default values will be assigned.
Multidimensional Array in Java can perform several operations.
Let Us See the Matrix Addition of Two Arrays.
Code:
import java.util.*; //Java Program to demonstrate the multidimensional array public class MultidimensionalArray { //main method public static void main(String args[]) { int row, col, c, d; //input the number of rows and columns Scanner <u>in</u> = new Scanner(System.in); System.out.println("Enter the number of rows of matrix"); row = in.nextInt(); System.out.println("Enter the number of columns of matrix"); col = in.nextInt(); //initialization of two matrices and sum matrix int firstmat[][] = new int[row][col]; int secondmat[][] = new int[row][col]; int summat[][] = new int[row][col]; //adding elements to first matrix System.out.println("Enter the elements to be added to the first matrix"); for (c = 0; c < row; c++) for (d = 0; d < col; d++) firstmat[c][d] = in.nextInt(); //adding elements to second matrix System.out.println("Enter the elements to be added to the second matrix"); for (c = 0 ; c < row ; c++) for (d = 0 ; d < col ; d++) secondmat[c][d] = in.nextInt(); //sum of the two matrices for (c = 0; c < row; c++) for (d = 0; d < col; d++) summat[c][d] = firstmat[c][d] + secondmat[c][d]; System.out.println("Sum of the two given matrices is:"); //printing the sum matrix for (c = 0; c < row; c++) { for (d = 0; d < col; d++) System.out.print(summat[c][d]+"\t"); System.out.println(); } } }
Output:
If subtraction needs to be performed, replace ‘+’ with ‘-‘ in the code.
Let us see how Matrix Multiplication Works.
Code:
import java.util.*; //Java Program to perform matrix multiplication public class MultidimensionalArray { //main method static int N = 4; // multiply matrices a and b, and then stores the result in c static void mul(int a[][], int b[][], int c[][]) { int i, j, k; for (i = 0; i < N; i++) { for (j = 0; j < N; j++) { c[i][j] = 0; for (k = 0; k < N; k++) c[i][j] += a[i][k] * b[k][j]; //multiply a and b matrices } } } //main method public static void main (String[] args) { int a[][] = { {9, 7, 2, 3}, {9, 7, 2, 3}, {4, 13, 32, 2}, {9, 7, 2, 3}}; int b[][] = {{ 9, 7, 2, 3}, {9, 7, 2, 3}, {9, 7, 2, 3}, {4, 13, 32, 2}}; // Store the result in c int c[][] = new int[N][N] ; int i, j; mul(a, b, c); //calling the mul method System.out.println("Multiplication result matrix" + " is "); for (i = 0; i < N; i++) { for (j = 0; j < N; j++) System.out.print( c[i][j] + " "); System.out.println(); } } }
Output:
Arrays are homogenous data structures that can store similar types of elements. It can be of single-dimensional or multidimensional. In this document, multidimensional arrays are discussed with explaining the syntax structure, initialization, etc.
This is a guide to Multidimensional Array in Java. Here we discuss 2 types of the multidimensional array in java, how to declare, how to initialize and operation in it. You can also go through our other related articles to learn more –
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