Java Program to Print Right Triangle of Same Alphabet

In this Java pattern program, we show the steps to print the same alphabet or character in every row and column of a right angled triangle using for loop, while loop, and functions.

The below program accepts the user-entered rows and uses the nested for loop to traverse the rows and columns. Next, the program will print the same character or alphabet (A) in a right angled triangle pattern.

import java.util.Scanner;
public class Example {
	private static Scanner sc;
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Numbers of Rows = ");
		int rows = sc.nextInt();
		
		int a = 65;

		for (int i = 0 ; i < rows; i++ ) 
		{
			for (int j = 0 ; j <= i; j++ ) 	
			{
				System.out.printf("%c ", a);
			}
			System.out.println();
		}
	}
}
Enter Numbers of Rows = 12
A 
A A 
A A A 
A A A A 
A A A A A 
A A A A A A 
A A A A A A A 
A A A A A A A A 
A A A A A A A A A 
A A A A A A A A A A 
A A A A A A A A A A A 
A A A A A A A A A A A A

Within this program, we replaced the for loop with a while loop to traverse the rows and columns and print the right angled triangle of the same alphabet A at each position. For more Alphabet Patterns, please click here.

import java.util.Scanner;
public class Example {
	private static Scanner sc;
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		int rows, i, j, a = 65;
		System.out.print("Enter Numbers of Rows = ");
		rows = sc.nextInt();
		
		i = 0 ;
		while (i < rows ) 
		{
			j = 0 ;
			while (j <= i ) 	
			{
				System.out.printf("%c ", a);
				j++;
			}
			System.out.println();
			i++;
		}
	}
}
Enter Numbers of Rows = 15
A 
A A 
A A A 
A A A A 
A A A A A 
A A A A A A 
A A A A A A A 
A A A A A A A A 
A A A A A A A A A 
A A A A A A A A A A 
A A A A A A A A A A A 
A A A A A A A A A A A A 
A A A A A A A A A A A A A 
A A A A A A A A A A A A A A 
A A A A A A A A A A A A A A A

This example allows the user to enter the rows and the alphabet characters. Next, within this Java pattern program, we created a RightTriSameAlpha function to print the right angled triangle of user-given alphabets on rows and columns.

import java.util.Scanner;
public class Example {
	private static Scanner sc;
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Numbers of Rows = ");
		int rows = sc.nextInt();
		
		System.out.print("Enter Character = ");
		char a = sc.next().charAt(0);
		
		RightTriSameAlpha(rows, a);
	}
	public static void RightTriSameAlpha(int rows, char a) {
		for (int i = 0 ; i < rows; i++ ) 
		{
			for (int j = 0 ; j <= i; j++ ) 	
			{
				System.out.printf("%c ", a);
			}
			System.out.println();
		}	
	}	
}
Right Triangle of Same Alphabet