package edu;
import java.io.*;
import jakarta.servlet.*;
import jakarta.servlet.http.*;
public class Slabnia extends HttpServlet {
private int slabnia(int n) {
if (n == 0) return 0;
else return n + slabnia(n - 1);
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
int n = 5;
String str = getServletConfig().getInitParameter("n");
if (str != null) n = Integer.parseInt(str);
str = request.getParameter("n");
if (str != null) n = Integer.parseInt(str);
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("");
out.println("");
out.println("");
out.println("słabnia");
out.println("");
out.println("");
out.println("Słabnia
");
out.println("Słabnia dla liczby n (oznaczona jest jako n?)");
out.println("
to suma kolejnych liczb naturalnych: n? = 1 + 2 + ... + n
");
out.println("");
out.println(String.format("%d? = %d
", n, slabnia(n)));
String autor = request.getServletContext().getInitParameter("autor");
out.println("autor: " + autor + "
");
out.println("
");
out.println("powrót
");
out.println("");
out.println("");
}
}