تحديات برمجيةالتحدي الخامس - حل التمرين الثالث بلغة جافا

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n;

        do {
            System.out.print("Enter an odd number as the number of lines: ");
            n = input.nextInt();
        }
        while (n <= 0 || n % 2 == 0);

        for (int i = 1; i <= n; i++)
        {
            if (i <= n / 2)
            {
                for (int k = 1; k <= n / 2; k++)
                {
                    System.out.print(" ");
                }
                
                System.out.print("*");
                
                for (int j = 1; j <= n / 2 - 1; j++)
                {
                    if (i == 1 || i == n / 2 + 1) {
                        System.out.print("*");
                    }
                    else {
                        System.out.print(" ");                        
                    }
                }
                
                System.out.print("*");
            }
            else if (i == n / 2 + 1)
            {
                for (int j = 1; j <= n; j++)
                {
                    System.out.print("*");
                }
            }
            else
            {
                System.out.print("*");
                
                for (int j = 1; j <= n / 2 - 1; j++)
                {
                    if (i == n) {
                        System.out.print("*");
                    }
                    else {
                        System.out.print(" ");                        
                    }
                }
                
                System.out.print("*");
            }
            System.out.println();
        }

    }

}

Enter an odd number as the number of lines: 9
    *****
    *   *
    *   *
    *   *
*********
*   *
*   *
*   *
*****