import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while(sc.hasNextInt()) {
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 0; j < n - i; j++) {
System.out.print(" ");
}
for (int k = 0; k < 2 * i - 1; k++) {
System.out.print("*");
}
System.out.println();
}
for(int i = n - 1; i >= 1; i--){
for(int j = i; j < n; j++){
System.out.printf(" ");
}
for(int k = i * 2 - 1; k > 0; k--){
System.out.printf("*");
}
System.out.println();
}
}
}
}
这题代码分为两段,一段打印上半部分金字塔,另一端负责打印下半部分金字塔。