import java.util.Scanner;
public class NumberPyramid
{
 public static void main(String[] args) {
  int num;
  Scanner sc = new Scanner(System.in);
  System.out.print(“Enter number of rows : “);
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = num – r; sp >= 1; sp–) {
    System.out.print(” “);
   }
   for (int c = 1; c <= r; c++) {
    System.out.print(” ” + c);
   }
   System.out.println();
  }
 }
}

Output:

Enter number of rows : 6

            1
         1  2
       1  2  3
     1  2  3  4
   1  2  3  4  5
 1  2  3  4  5  6

BUILD SUCCESSFUL (total time: 2 seconds)

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