Study the following program
//precondition: x>=0
public void demo(int x)
{
System.out.print(x % 10);
if (x % 10 != 0)
{
demo(x/10);
}
System.out.print(x%10);
}
Which of the following is printed as a result of the call demo $(1234)$?
- $1441$
- $3443$
- $12344321$
- $43211234$