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

Since there's been no statement that loops cannot be used:

void reverseArray(int[] x) {
    if (x != null) {
        for (int i = 0; i < length.x / 2; i++) {
            int j = (length.x - 1) - i;
            int temp = x[i];
            x[i] = x[j];
            x[j] = temp;
         }
         reverseArray(null);
     }
}

Probably the fastest of the lot.