Java Program to Print Character Pyramid Pattern

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Introduction

Printing a character pyramid pattern is a common exercise to practice loops and formatting in Java. Instead of using stars (*), this program will print characters like A, B, C, etc., in a pyramid pattern.

Problem Statement

Create a Java program that:

• Accepts the number of rows (size) for the pyramid.
• Prints a pyramid using alphabetic characters (A, B, C, etc.).

Example:

• Input: size = 5
• Output:

   A A B A B C A B C D A B C D E 

Solution Steps

1. Input the Size of the Pyramid: The size determines the number of rows in the pyramid.
2. Use Nested Loops: The outer loop will control the number of rows, while the inner loops will handle printing spaces and characters.
3. Display the Character Pyramid: Print alphabetic characters, incrementing from A to the character corresponding to the row number.

Java Program

// Java Program to Print a Character Pyramid Pattern // Author: [Your Name] import java.util.Scanner; public class CharacterPyramid { public static void main(String[] args) { // Step 1: Accept the size of the pyramid Scanner sc = new Scanner(System.in); System.out.print("Enter the size of the pyramid: "); int size = sc.nextInt(); // Step 2: Outer loop for the rows for (int i = 1; i <= size; i++) { // Step 3: Print spaces for alignment for (int j = i; j < size; j++) { System.out.print(" "); } // Step 4: Print characters in each row char ch = 'A'; // Start from character 'A' for (int k = 1; k <= i; k++) { System.out.print(ch + " "); ch++; // Increment character for the next position } // Move to the next line after printing each row System.out.println(); } // Closing the scanner object sc.close(); } } 

Explanation

Step 1: Input Size

• The program starts by taking input from the user to determine the size (number of rows) of the pyramid.

Step 2: Outer Loop for Rows

• The outer loop controls the number of rows to be printed. It iterates from 1 to the size entered by the user.

Step 3: Print Spaces for Alignment

• The first inner loop prints spaces to ensure the pyramid is centered. The number of spaces decreases as you move down the rows.

Step 4: Print Characters

• The second inner loop prints characters. It starts with the character A on the first row, and each subsequent row increases the number of characters up to the row number.

Output Example

For size = 5, the output is:

 A A B A B C A B C D A B C D E 

For size = 6, the output is:

 A A B A B C A B C D A B C D E A B C D E F 

Conclusion

This Java program prints a character pyramid pattern. The pyramid is aligned using spaces, and characters from A onwards are printed in increasing numbers for each row. This exercise helps in practicing nested loops and character manipulation in Java.