How do you print a two-dimensional array?

How do you print a two-dimensional array?

public class Print2DArray { public static void main(String[] args) { final int[][] matrix = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } }; for (int i = 0; i < matrix. length; i++) { //this equals to the row in our matrix. for (int j = 0; j < matrix[i].

How do I print a 2D array in loop?

Print a 2D Array or Matrix using single loop

1. Iterate a loop over the range [0, N * M] using the variable i.
2. At each iteration, find the index of the current row and column as row = i / M and column = i % M respectively.
3. In the above steps, print the value of mat[row][column] to get the value of the matrix at that index.

How do you print a dimensional array?

To print the content of a one-dimensional array, use the Arrays. toString() method. To print the content of a a multi-dimensional array, use the Arrays. deepToString() method.

How do you print an array in Java?

We cannot print array elements directly in Java, you need to use Arrays. toString() or Arrays. deepToString() to print array elements. Use toString() method if you want to print a one-dimensional array and use deepToString() method if you want to print a two-dimensional or 3-dimensional array etc.

How do you print an array of arrays?

1. public class Array { public static void main(String[] args) { int[] array = {1, 2, 3, 4, 5}; for (int element: array) { System.out.println(element); } } }
2. import java.util.Arrays; public class Array { public static void main(String[] args) { int[] array = {1, 2, 3, 4, 5}; System.out.println(Arrays.toString(array)); } }

Can you use an enhanced for loop on a 2D array?

Since 2D arrays are really arrays of arrays you can also use a nested enhanced for-each loop to loop through all elements in an array.

How do you reverse a matrix in Java?

Program to reverse the rows in a 2d Array

1. Initialise the start index as 0 and end index as N-1.
2. Iterate loop till start index is less than ending index, swap the value at these indexes and update the index as:

Can an entire array be printed out at once?

Can an entire array be printed out at once? What is the most efficient way to assign or print out arrays? [Java Question] Can you change size of array once created? No, you cannot change the size of array once created.

How do I print an array in bash?

Print Bash Array We can use the keyword ‘declare’ with a ‘-p’ option to print all the elements of a Bash Array with all the indexes and details. The syntax to print the Bash Array can be defined as: declare -p ARRAY_NAME.

How do you make a 2 by 2 matrix in Java?

Java Program to add two matrices

1. public class MatrixAdditionExample{
2. public static void main(String args[]){
3. //creating two matrices.
4. int a[][]={{1,3,4},{2,4,3},{3,4,5}};
5. int b[][]={{1,3,4},{2,4,3},{1,2,4}};
6. //creating another matrix to store the sum of two matrices.
7. int c[][]=new int[3][3]; //3 rows and 3 columns.