Day 32

 Hello!

Accessing Elements in a Two Dimensional Array

Elements in a 2D array are accessed using two indices: one for the row and one for the column.

arr[row][column]

For example, to access the element in the second row and third column of the above array (arr[1][2]), you would use the following syntax:

int value = arr[1][2];  // This will access the value 6 in the array

Remember that in Java, array indices start from 0. So arr[1][2] refers to the second row and third column, not the first.

Initializing and Modifying Elements in a Two Dimensional Array

You can modify elements of a 2D array using the row and column indices. For example, to change the value in the first row, second column, you can do:

arr[0][1] = 10;  // This sets the value 10 in the first row, second column

You can also iterate through the array to modify all elements, such as in a loop:

Looping Through a Two Dimensional Array

To access or modify all elements in a 2D array, you typically use nested loops. The outer loop iterates over the rows, and the inner loop iterates over the columns within each row.

Example:

This code prints the elements in a matrix format.