import javax.swing.*;
public class Piramida {

    public static String piramida(int counter, String znak, int odmik) {
        int i = 0;
        int p = 0;
        int st_presledkov = 0;

        if (counter == 0) {
            return " ";
        } else {
            st_presledkov = ((odmik - counter) / 2);
            while (p < st_presledkov) {
                System.out.print(" ");
                p++;
            }
            p = 0;
            while (i < counter) {
                System.out.print(znak);
                i++;
            }
            i = 0;
            System.out.println("");
            return piramida(counter - 2, znak, odmik);
        }
    }
    public static void main(String[] args) {

        int stevilo = Integer.parseInt(JOptionPane
                                       .showInputDialog("Vpiši velikost obrnjenega stožca"));
        String znak = JOptionPane.showInputDialog("Izberi si znak");
        int odmik = Integer.parseInt(JOptionPane
                                     .showInputDialog("Vpiši odmik sredine stožca od levega roba"));

        piramida(stevilo, znak, odmik);
    }
}