package PracticePattern;
import java.util.Scanner;
public class PracticePattern20 {
public static void main(String[] args) {
System.out.println("PracticePattern 20 ");
Scanner scan = new Scanner(System.in);
int n = scan.nextInt();
int rows = 1;
int nsp = n;
int nst = 1;
// upper traingle
while (rows <= n) {
// work for spaces
for (int csp = 1; csp <= nsp; csp++) {
System.out.print(" ");
}
// work for stars
for (int cst = 1; cst <= nst; cst++) {
if (cst > 1 && cst < nst) {
System.out.print(" ");
} else {
System.out.print("*");
}
}
// preparation
System.out.println();
nsp--;
nst = nst + 2;
rows++;
}
// lower traingle
rows = 1;
nsp = 0;
nst = n;
while (rows <= n) {
// work for spaces
for (int csp = 1; csp <= nsp; csp++) {
System.out.print(" ");
}
// work for stars
for (int cst = 1; cst <= nst; cst++) {
if (cst > 1 && cst < nst) {
System.out.print(" ");
} else {
System.out.print("*");
}
}
// prepation
System.out.println();
nsp++;
nst = nst - 2;
rows++;
}
}
}