Java 数组嵌套

public static void main(String[] args)
        {
            int[] arr = new int[] {8,6,3,1,9,5,4,7};
            int[] index = new int[] {3,2,7,0,4,5,1,6,3,7,3};
            String tel = "";
            for(int i =0; i<index.length;i++)
            {
                tel+=arr[index[i]];
            }
            System.out.println("Biubiu+"+tel); 
        }