Program Code :
import java.util.Scanner;public class Triangle{public static void main(String[] args) {Scanner scn=new Scanner(System.in);System.out.print("Enter the number of star = ");int n=scn.nextInt();for (int i = 1; i <=n; i++) {for (int j = n-i; j >=1; j--) {System.out.print(" ");}for (int k = 1; k <=i; k++) {System.out.print("*");}System.out.println("");}}}
Output :
Enter the number of star = 10
*
**
***
****
*****
******
*******
********
*********
**********