Hollow Concentric Hexagon of Stars
This program prints a hollow concentric hexagon using stars.
Problem Statement
Write a Java program that prints a hollow concentric hexagon with 7 rows.
Source Code
| 1 | public class HollowConcentricHexagon { |
| 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 || i==n/2+1) System.out.print("* "); |
| 8 | else System.out.print(" "); |
| 9 | } |
| 10 | System.out.println(); |
| 11 | } |
| 12 | } |
| 13 | } |
Program Output
* * * * * * *
* *
* *
* * * * * * *
* *
* *
* * * * * * *
Explanation
An extra middle-row condition (i==n/2+1) is added to the hollow hexagon boundaries, printing an additional full row of stars in the middle, giving the hexagon a concentric divided appearance.