Show the output of the following code:

Question

```
public class Test {
public static void main(String[] args) {
int[] x = {1, 2, 3, 4, 5};
increase(x);

int[] y = {1, 2, 3, 4, 5};
increase(y[0]);

System.out.println(x[0] + " " + y[0]);
}

public static void increase(int[] x) {
for (int i = 0; i < x.length; i++)
x[i]++;
}

public static void increase(int y) {
y++;
}
}```
a. 0 0
b. 1 1
c. 2 2
d. 2 1
e. 1 2

Answer 1

d Invoking increase(x) passes the reference of the array to the method. Invoking increase(y[0]) passes the value 1 to the method. The value y[0] outside the method is not changed.