从页面中输入一个自然数编写Serlvet程序计算一组三角形数据。输出时数据背景色临行异色隔行同色。请给出相应代码

以下是一个示例代码：

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/TriangleServlet")
public class TriangleServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public TriangleServlet() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<html><head><title>Triangle Data</title></head><body>");

        int n = Integer.parseInt(request.getParameter("n"));
        out.println("<h2>Triangle Data for n=" + n + "</h2>");

        out.println("<table border='1'>");
        out.println("<tr><th>Side 1</th><th>Side 2</th><th>Side 3</th><th>Area</th></tr>");
        boolean oddRow = true;
        for (int i = 1; i <= n; i++) {
            for (int j = i; j <= n; j++) {
                for (int k = j; k <= n; k++) {
                    if (i + j > k) {
                        double s = (i + j + k) / 2.0;
                        double area = Math.sqrt(s * (s - i) * (s - j) * (s - k));
                        out.print("<tr style='background-color:" + (oddRow ? "lightgray" : "white") + "'>");
                        out.print("<td>" + i + "</td>");
                        out.print("<td>" + j + "</td>");
                        out.print("<td>" + k + "</td>");
                        out.print("<td>" + area + "</td>");
                        out.print("</tr>");
                        oddRow = !oddRow;
                    }
                }
            }
        }
        out.println("</table>");

        out.println("</body></html>");
        out.close();
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

}

这个Servlet使用了HTML表格来显示三角形的数据，同时使用oddRow变量来控制背景色的交替变化。当oddRow为true时，背景色为浅灰色；当oddRow为false时，背景色为白色

从页面中输入一个自然数编写Serlvet程序计算一组三角形数据。输出时数据背景色临行异色隔行同色。请给出相应代码