Advanced Hybrid Hourglass Mosaic (Numbers + Alphabets)
This program prints an hourglass mosaic alternating numbers and alphabets.
Problem Statement
Write a Java program that prints an hourglass of 7 rows alternating numbers and alphabets cyclically.
Source Code
| 1 | public class AdvancedHourglassMosaicNumbersAlphabets { |
| 2 | public static void main(String[] args) { |
| 3 | int n=7,num=1; char ch='A'; boolean number=true; |
| 4 | for(int i=0;i<n;i++){ |
| 5 | for(int j=0;j<n;j++){ |
| 6 | if(i<=j && i+j>=n-1){ |
| 7 | if(number) System.out.print(num+++" "); |
| 8 | else { |
| 9 | System.out.print(ch+" "); |
| 10 | ch++; |
| 11 | if(ch>'Z') ch='A'; |
| 12 | } |
| 13 | number=!number; |
| 14 | } else System.out.print(" "); |
| 15 | } |
| 16 | System.out.println(); |
| 17 | } |
| 18 | } |
| 19 | } |
Program Output
1 A 2
B 3 C 4 D
5 E 6 F 7 G
H 8 I 9 J
10 K 11 L
M 12 N
13 O
Explanation
Within the hourglass-shaped region, a boolean toggle alternates each printed cell between a sequential number and a sequential alphabet, so the hourglass is filled with a strictly alternating hybrid sequence.