Hollow Hexagon with Numbers
This program prints a hollow hexagon using numbers.
Problem Statement
Write a Java program that prints a hollow hexagon with numbers up to 7 rows.
Source Code
| 1 | public class HollowHexagonNumbers { |
| 2 | public static void main(String[] args) { |
| 3 | int n = 7; |
| 4 | for(int i=1; i<=n; i++) { |
| 5 | for(int j=i; j<n; j++) System.out.print(" "); |
| 6 | for(int j=1; j<=n; j++) { |
| 7 | if(i==1 || i==n || j==1 || j==n) System.out.print(i + " "); |
| 8 | else System.out.print(" "); |
| 9 | } |
| 10 | System.out.println(); |
| 11 | } |
| 12 | } |
| 13 | } |
Program Output
1 1 1 1 1 1 1
2 2
3 3
4 4
5 5
6 6
7 7 7 7 7 7 7
Explanation
Similar to the hollow star hexagon, boundary cells print the current row index instead of a star, so each row's number appears at the hexagon's edges creating a hollow numeric hexagon.