Java-Pattern-Problems/ButterflyStarPattern.java at main · ArpanC6/Java-Pattern-Problems · GitHub

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import java.util.Scanner;
public class ButterflyStarPattern {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.print("Enter the number: ");
        int num = s.nextInt();

        for (int i = 1; i<= num; i++){
            for (int j = 1; j<= i; j++){
                System.out.print("*");
            }
            for (int j = 1; j<= 2 * (num - i); j++){
            System.out.print(" ");
        }
        for (int j = 1; j<= i; j++){
            System.out.print("*");
        }
        System.out.println();
    }
    for (int i = num; i>=1; i--){
            for (int j = 1; j<= i; j++){
                System.out.print("*");
            }
            for (int j = 1; j<= 2 * (num - i); j++) {
            System.out.print(" ");
        }
        for (int j = 1; j<= i; j++){
            System.out.print("*");
        }
        System.out.println();
    }
    }
}