تحديات برمجيةالتحدي الثاني - حل التمرين الرابع 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 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 j=1; j<=i; j++)
                {
                    System.out.print("*");
                }
            }
            else {
                for (int j=1; j<n-i+2; j++)
                {
                    System.out.print("*");
                }
            }
            System.out.println();
        }
        
    }

}

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 the number of lines: ");
            n = input.nextInt();
        }
        while( n<=0 || n%2==0 );
        
        for (int i=1; i<(n/2)+2; i++)
        {
            for (int j=1; j<=i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
                
        for (int i=1; i<=n/2; i++)
        {
            for (int j=1; j<(n/2)+2-i; j++)
            {
                System.out.print("*");
            }
            System.out.println();
        }
        
    }

}

Enter the number of lines: 5
*
**
***
**
*