Spiral Triangle of Alphabets
This program prints a triangular spiral of alphabets.
Problem Statement
Write a Java program that prints a triangle of 5 rows filled with alphabets in spiral order.
Source Code
| 1 | public class SpiralTriangleAlphabets { |
| 2 | public static void main(String[] args) { |
| 3 | int n=5; |
| 4 | char ch='A'; |
| 5 | for(int i=0;i<n;i++){ |
| 6 | for(int j=0;j<=i;j++){ |
| 7 | System.out.print(ch+" "); |
| 8 | ch++; |
| 9 | if(ch>'Z') ch='A'; |
| 10 | } |
| 11 | System.out.println(); |
| 12 | } |
| 13 | } |
| 14 | } |
Program Output
A B C D E F G H I J K L M N O
Explanation
A single character variable ch increments across the entire triangle row by row, resetting after 'Z', so a sequential run of alphabets fills the growing triangular shape directly.