如何用整数和小数计算平均值？

Question

这里我想要row5，row6，row7的平均值，然后我想用另一个表检查计算是对还是错。怎么做到这一点？

    for(WebElement rowElement:TotalRowCount)
    {
        List<WebElement> TotalColumnCount=rowElement.findElements(By.xpath("td/span"));
        int ColumnIndex=1;
        for(WebElement colElement:TotalColumnCount)
        {
            String s=colElement.getText().replace("%", "").replace(",","");
            if(!s.isEmpty()&&!s.equals("NA"))
            {
                if(s.contains(".")||s.contains("-"))
                {
                    double d=Double.parseDouble(s);
                    System.out.println("Row "+RowIndex+"Double value is"+d);
                }
                else
                {
                    int x1=Integer.parseInt(s);
                    System.out.println("Row "+RowIndex+"Integer value"+x1);
                }

                ColumnIndex=ColumnIndex+1;

            }
            else{/*do nothing*/}
        }
        RowIndex=RowIndex+1;
    }

输出：

Row 5Integer value140
Row 6Integer value51
Row 6Integer value52
Row 6Integer value51
Row 6Integer value36
Row 7Double value is30.0
Row 7Double value is30.65
Row 7Double value is29.38