Write the Java code of the method Mirror that takes one 2-dimentional array (squared
matrix) A1, and returns 2D array A2 which is the mirror image of A1.
Sure! Here's the Java code for the `Mirror` method:
```java
public class MirrorMatrix {
public static int[][] mirror(int[][] A1) {
int n = A1.length;
// Create a new 2D array with the same dimensions as A1
int[][] A2 = new int[n][n];
// Iterate over each row of A1
for (int i = 0; i < n; i++) {
// Iterate over each column of A1
for (int j = 0; j < n; j++) {
// Set the corresponding element in A2 to the mirror image of the element in A1
A2[i][j] = A1[i][n - 1 - j];
}
}
// Return the mirrored array A2
return A2;
}
}
```
To explain the code:
1. The `mirror` method takes a 2-dimensional array `A1` as input and returns a new 2-dimensional array `A2`.
2. The variable `n` is used to store the length of the array `A1`, assuming it is a square matrix.
3. A new 2D array `A2` is created with the same dimensions as `A1` using the `n` variable.
4. Two nested for-loops are used to iterate over each element in `A1`.
5. Inside the loops, the element at index `(i, j)` in `A1` is assigned to the corresponding element at index `(i, n - 1 - j)` in `A2`. The `n - 1 - j` is used to calculate the mirror image of the column index `j`.
6. Finally, the mirrored array `A2` is returned.