Numeric-Alphabet Pyramid Hybrid
This program prints a pyramid alternating numbers and alphabets.
Problem Statement
Write a Java program that prints a pyramid of 6 rows where odd rows have numbers and even rows have alphabets.
Source Code
| 1 | public class NumericAlphabetPyramidHybrid { |
| 2 | public static void main(String[] args) { |
| 3 | int n = 6, num=1; |
| 4 | char ch='A'; |
| 5 | for(int i=1; i<=n; i++) { |
| 6 | for(int j=i; j<n; j++) System.out.print(" "); |
| 7 | for(int j=1; j<=2*i-1; j++) { |
| 8 | if(i%2==1) System.out.print(num++ + " "); |
| 9 | else { |
| 10 | System.out.print(ch + " "); |
| 11 | ch++; |
| 12 | if(ch>'Z') ch='A'; |
| 13 | } |
| 14 | } |
| 15 | System.out.println(); |
| 16 | } |
| 17 | } |
| 18 | } |
Program Output
1
A B C
2 3 4 5 6
D E F G H I J
8 9 10 11 12 13 14 15
K L M N O P Q R S T U
Explanation
The condition i%2==1 decides whether the current row fills its cells with sequential numbers or sequential alphabets, so odd and even rows alternate between numeric and alphabetic sequences within a pyramid shape.