Question

What is the output of the following?

class ChangeIt
{
static void doIt( int[] z )
{
int temp = z[ -1 ] ;
z[0] = temp;
}
}

class TestIt
{
public static void main ( String[] args )
{
int[] myArray = {1, 2, 3, 4, 5} ;

ChangeIt.doIt( myArray );

for (int j=0; j System ( myArray[j] + " " ) ;
}
}

Answer 1

The output of the given code will be "5 2 3 4 5," as the `doIt` method in the `ChangeIt` class modifies the array by assigning its last element to the first position.

Step-by-step explanation:

The code consists of two classes, ChangeIt` and TestIt. The `doIt` method in the `ChangeIt` class takes an array as input and assigns its last element to the first position. In the `TestIt` class, an array `myArray` is initialized with values from 1 to 5. The `doIt` method is then called on `myArray`, modifying it. The subsequent loop prints the elements of the modified array.

Initially, `myArray` is [1, 2, 3, 4, 5]. After the `doIt` method is applied, the array becomes [5, 2, 3, 4, 5]. The loop in the `main` method then prints each element of the modified array, resulting in the output "5 2 3 4 5." The `System.out.print` statement is used to print the elements without newline characters, producing a space-separated output.

In summary, the output reflects the modifications made by the `doIt` method, demonstrating how changes to the array within a method persist and impact the array's content when accessed later in the program.