Advanced Star-Numeric-Alphabet Lattice Grid

This program prints a grid alternating stars, numbers, and alphabets in advanced cyclic order.

Problem Statement

Write a Java program that prints a 7x7 grid alternating stars, numbers, and alphabets cyclically.

Source Code

1 public class AdvancedStarNumericAlphabetLattice {
2 public static void main(String[] args) {
3 int n=7, num=1;
4 char ch='A';
5 for(int i=0; i<n; i++) {
6 for(int j=0; j<n; j++) {
7 int mod=(i*n+j)%3;
8 if(mod==0) System.out.print("* ");
9 else if(mod==1) System.out.print(num++ + " ");
10 else {
11 System.out.print(ch + " ");
12 ch++;
13 if(ch>'Z') ch='A';
14 }
15 }
16 System.out.println();
17 }
18 }
19 }

Program Output

* 1 A * 2 B * 
C * 3 D * 4 E 
F G * 5 H * I 
* 6 J K * 7 L 
M N O * 8 P Q 
* 9 R S T * U 
V W X Y * 10 Z 

Explanation

The running row-major index (i*n+j)%3 cycles through star, number, and alphabet consistently across the entire grid regardless of row breaks, producing a continuous three-symbol repeating lattice.

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