Java, recursively reverse an array

Question

I haven\'t found anything with the specific needs of my function to do this, yes, it is for homework.

So I have:

public void reverseArray(int[] x) {
         


        

Answer 1

void reverseArray(int[] x){
   reverse(x, 0, x.length -1);
}

void reverse(int[] x, int i, int j){
    if(i

Test:

int[] s = new int[]{1,2,3,4,5};
reverseArray(s);
System.out.println(Arrays.toString(s));//"5,4,3,2,1"

Recursive, O(n), no temporary Array needed.