StringChapter.java

import java.util.Scanner;
//Till this commit this File is used as the pattern file the string is done after the 2D array

public class StringChapter {

    public static void pattern(int n) {
        for (int i = 0; i < n; i++) {
            for (int k = n - i; k > 0; k--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
        for (int i = n - 1; i >= 0; i--) {
            for (int k = n - i; k >= 0; k--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i - 1; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
    }

    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            System.out.print("Enter the n : ");
            int n = sc.nextInt();
            pattern(n);
        }
    }
}