Enter an expression without parentheses, the number is less than 0-9, the output evaluates, and all the intermediate results are turned into shaping. Example: Input: 3+8x2/9-2 output: 2

public class practiceutil {          public static  void main (String[] args)  {            string s =  "3+8x2/9-2 ";           int  result = getmyret (s);            SYSTEM.OUT.PRINTLN ("Final result:"  + result);       }          public static int getmyret (STRING&NBSP;S1)  {            int len = s1.length ();            List<String> list = new ArrayList<String> ();            for  (int i = 0; i  < len; i++) &NBSP;&NBsp             list.add (S1.charAt (i)  +  "");            system.out.println ("List--->"  + list) ;           for  (int j = 0; j  < list.size ();  j++)  {                if  (List.get (j). Equals ("X"))  {                    int ji = integer.parseint (List.get ( j - 1))                             * integer.parseint (List.get (j +  1));                    list.adD (j - 1, ji +  "");//  the JI into the previous position of the original X, the original back shift. Move backward from 8                     list.remove (j);//  Delete 8;remove is the forward move after deleting the current position, so x to the subscript position of J.                     List.remove (j);//  Delete x                    list.remove (j);//  Delete 9                    system.out.println ("List--x"  + list);//  List--x after->[3, +, 16,                                                 &nbsP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;//&NBSP;/,&NBSP;9,&NBSP;-,&NBSP;2,&NBSP;]                     j--;//  equivalent to this cycle of the wood has a beating next subscript, because immediately to participate in the operation of Ji, rather than skip                 } else if  (List.get (j). Equals ("/"))  {                    int shang =  integer.parseint (List.get (j - 1))                             /  Integer.parseint (List.get (j + 1));                    list.add (j - 1, shang +  "");        &Nbsp;          list.remove (j);                    list.remove (j);                   list.remove (j) ;                    System.out.println ("list--/"  + list);// list--/after->[3, +, 1,                                                              // -, 2, ]                    j--;               }            }            for  (Int k = 0; k < list.size ();  k++)  {//  This time is the new size               if  ( List.get (k). Equals ("+"))  {                    int he = integer.parseint (List.get (k - 1))                             + integer.parseint (List.get (k + 1));                    list.add (k -  1, he +  "");