public class DisplayPyramid {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in); // Scanner class in java
		System.out.print("Enter the rows you want:");
		int rows = sc.nextInt();
		System.out.println("");
		for (int i = 1; i <= rows; i++) {// outer forloop
			for (int j = 1; j <= (rows - i) * 2; j++) {
				System.out.print(" ");// create initial space for pyramid shape
			}
			for (int k = i; k >= 1; k--) {// inner for loops
				System.out.print(" " + k);// create left half
			}
			for (int l = 2; l <= i; l++) {
				System.out.print(" " + l); // create right half
			} // end outer for loop
			System.out.println();
		}
	}
}