What is printed as a result of executing the following program? public class BirkbecksPiExamPR21 {
public static void main(String[] args) {
int[] v = { 1, 2, 3, 4);
print();
for (int i = 1; i < v. length; i++) {
fiddle(v, i, v[i]);
print();
)
public static void fiddle(int[] arr, int idx, int v) {
idx--;
arr[idx + 1] = arr[idx]
[+ v;
public static void print(int[] a) {
System. out. print(a[0]);
for (int i = 1; i < a. length; i++)
System. out. print(", " + a[i]);
System. out. println();
>
You should explain why the output is produced.