What is the exact output produced by executing the main method?

public class AlternatePrint {
    public static void printAlternate(int[] arr, int index) {
         if(index >= arr.length) return;
         System.out.print(arr[index] + " ");
         if(index + 1 < arr.length)
             System.out.print(arr[index + 1] + " ");
         printAlternate(arr, index + 2);
    }
    public static void main(String[] args) {
         int[] data = {10, 20, 30, 40, 50};
         printAlternate(data, 0);
    }
}