public class Pattern {
    public static void main(String[] args) {
        int row=5;
        for (int i = 0; i < row; i++) {
            for (int j = 0; j < row-i; j++) {
                System.out.print(" ");
            }
            for (int j = 0; j <=i; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
    }
    }

import java.util.Scanner;
public class Pattern {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("Input number to print a diamond of asterisks: ");

        int n = input.nextInt();
        //print Triangle
        for (int i = 1; i <= n-1; i++) {
            for (int j = n - i; j > 0; j--) {
                System.out.print(" ");
            }

            for (int k = 1; k <= i ; k++) {
                System.out.print("* ");
            }
            System.out.println();
        }
        //print revers Triangle
        for (int i = 0; i < n; i++) {
        
            for (int j = 0; j < i; j++) {
                System.out.print(" ");
            }

        for (int k = i; k < n; k++) {
                System.out.print("* ");
            }

            System.out.println(); 
        }
    }
    }

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