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import java.util.Scanner;

public class Diamond

{

public static void main(String args[])

{

int n, i, j, space = 1;

System.out.print("Enter the number of rows: ");

Scanner s = new Scanner(System.in);

n = s.nextInt();

space = n - 1;

for (j = 1; j <= n; j++)

{

for (i = 1; i <= space; i++)

{

System.out.print(" ");

}

space--;

for (i = 1; i <= 2 * j - 1; i++)

{

System.out.print("*");

}

System.out.println("");

}

space = 1;

for (j = 1; j <= n - 1; j++)

{

for (i = 1; i <= space; i++)

{

System.out.print(" ");

}

space++;

for (i = 1; i <= 2 * (n - j) - 1; i++)

{

System.out.print("*");

}

System.out.println("");

}

}

}