Concentric Hexagon Hybrid

This program prints concentric hexagons alternating stars and numbers.

Problem Statement

Write a Java program that prints concentric hexagons where odd rows have stars and even rows have numbers.

Source Code

1 public class ConcentricHexagonHybrid {
2 public static void main(String[] args) {
3 int n = 6;
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%2==1) System.out.print("* ");
8 else System.out.print(i + " ");
9 }
10 System.out.println();
11 }
12 }
13 }

Program Output

     * * * * * * 
    2 2 2 2 2 2 
   * * * * * * 
  4 4 4 4 4 4 
 * * * * * * 
6 6 6 6 6 6 

Explanation

The condition i%2==1 decides whether each full row prints stars or the row's own repeated number, so rows alternate between two symbol types forming a hexagon hybrid shape.

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