java/BUTTERFLYPATTERN.java at main · kabhinav143/java · GitHub

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import java.util.*;

public class BUTTERFLYPATTERN {
    public static void Butterfly(int n) {
        for (int i = 1; i <= n; i++) {
            // star
            for (int j = 1; j <= i; j++) {
                System.out.print("*");
            }
            // space
            for (int j = 1; j <= 2 * (n - i); j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = n; i >= 1; i--) {
            for (int j = 1; j <= i; j++) {
                System.out.print("*");
            }
            // space
            for (int j = 1; j <= 2 * (n - i); j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();

        }
    }

    public static void main(String args[]) {
        Butterfly(10);
    }
}