// Simple reference mystery problem
import java.util.*;

public class ReferenceMystery {
   public static void main(String[] args) {
      int[] arr = {6, 11, 0};
      System.out.println("arr = " + Arrays.toString(arr));
      int[] arr2 = mystery(arr);
      System.out.println("arr = " + Arrays.toString(arr));
   }
   
   public static int[] mystery(int[] list) {
      int[] result = new int[10];
      for (int i = 0; i < list.length; i++) {
         list[i] = list[i] * 2;
      }
      System.out.println("list = " + Arrays.toString(list));
      return result;
   }
}