public class test {
public static void main(String[] args) {
for (int i = 0; i < 5; i++) {
int t = 2 * i + 1;
for (int j = 0; j < t; j++) {
System.out.print("*");
}
System.out.println();
}
for (int i = 5; i >=0; i--) {
int t = 2 * i + 1;
for (int j = 0; j < t; j++) {
System.out.print("*");
}
System.out.println();
}
}
}