<awangdev>Decode String_1.java
private String popStack(Stack<Object> stack) {

        StringBuffer sb = new StringBuffer();
        while (!stack.isEmpty() && (stack.peek() instanceof String)) {
            sb.insert(0, stack.pop());
        }
        return sb.toString();
    }
private String var_0 ( Stack < Object > var_3 ) {
  StringBuffer var_5 = new StringBuffer ( ) ;
  while ( ! var_3 . isEmpty ( ) && ( var_3 . peek ( ) instanceof String ) ) {
    var_5 . insert ( 0 , var_3 . pop ( ) ) ;
  }
  return var_5 . toString ( ) ;
}
