public class TestSwapArrayInt {
public static void swap(int[] xs) {
int[] ys;
ys = new int[2];
ys[0] = xs[1];
ys[1] = xs[0];
xs = ys;
}
public static void main(String[] args) {
int[] xs;
xs = new int[2];
xs[0] = 15;
xs[1] = 21;
swap(xs);
System.out.println(xs[0]);
System.out.println(xs[1]);
}
}