题解 | #菱形图案#

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        while (scan.hasNext()) {
            int n = scan.nextInt();
            //菱形上面
            for (int i=1;i<=n;i++) {
                for (int j=n-i;j>=0;j--) {
                    System.out.print(" ");
                }
                for (int j=1;j<=i;j++) {
                    System.out.print("* ");
                }
                System.out.println();
            }
			// 菱形中间
            for(int i=0;i<n+1;i++) System.out.print("* ");
            System.out.println();
			
            // 菱形下面
            for (int i=1;i<=n;i++) {
                for (int j=1;j<=i;j++) System.out.print(" ");

                for (int j=0;j<=n-i;j++) System.out.print("* ");

                System.out.println();

            }
        }

    }
}