import java.util.*; public class NaturalNumberTriangle { public static void main(String args[]) { int rows, i, j, count = 1, star = 0; Scanner in = new Scanner(System.in); System.out.println(\"Enter number of rows in pattern\"); rows = in.nextInt(); for (i = 1; i <= rows; i++) { for (j = 1; j <= i; j++) { System.out.print(count + \" \"); count++; } System.out.print(\"\ \"); } } } Solution import java.util.*; public class NaturalNumberTriangle { public static void main(String args[]) { int rows, i, j, count = 1, star = 0; Scanner in = new Scanner(System.in); System.out.println(\"Enter number of rows in pattern\"); rows = in.nextInt(); for (i = 1; i <= rows; i++) { for (j = 1; j <= i; j++) { System.out.print(count + \" \"); count++; } System.out.print(\"\ \"); } } }.