Java Program to Print Downward Triangle of Mirrored Alphabets Pattern

Write a Java program to print downward triangle of mirrored alphabets pattern using for loop.

package Alphabets;

import java.util.Scanner;

public class DownwardTriMirrorAlp1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Downward Triangle of Mirrored Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("The Downward Triangle of Mirrored Alphabets Pattern");
		int alphabet = 65;
		
		for (int i = 0; i <= rows - 1; i++ ) 
		{
			for (int j = i; j <= rows - 1; j++ ) 	
			{
				System.out.print((char)(alphabet + j) + " ");
			}
			for(int k = rows - 2; k >= i; k--)
			{
				System.out.print((char)(alphabet + k) + " ");
			}
			System.out.println();
		}
	}
}
Java Program to Print Downward Triangle of Mirrored Alphabets Pattern

In this Java pattern example, we used the while loop to display the downward triangle pattern of mirrored alphabets.

package Alphabets;

import java.util.Scanner;

public class DownwardTriMirrorAlp2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Downward Triangle of Mirrored Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Downward Triangle of Mirrored Alphabets Pattern\n");
		int alphabet = 65;
		int j, k, i = 0;
		
		while( i <= rows - 1 ) 
		{
			
			j = i;
			while(j <= rows - 1 ) 	
			{
				System.out.print((char)(alphabet + j) + " ");
				j++;
			}
			
			k = rows - 2;
			while(k >= i)
			{
				System.out.print((char)(alphabet + k) + " ");
				k--;
			}
			System.out.println();
			i++;
		}
	}
}
Enter Downward Triangle of Mirrored Alphabets Rows = 15
Printing Downward Triangle of Mirrored Alphabets Pattern

A B C D E F G H I J K L M N O N M L K J I H G F E D C B A 
B C D E F G H I J K L M N O N M L K J I H G F E D C B 
C D E F G H I J K L M N O N M L K J I H G F E D C 
D E F G H I J K L M N O N M L K J I H G F E D 
E F G H I J K L M N O N M L K J I H G F E 
F G H I J K L M N O N M L K J I H G F 
G H I J K L M N O N M L K J I H G 
H I J K L M N O N M L K J I H 
I J K L M N O N M L K J I 
J K L M N O N M L K J 
K L M N O N M L K 
L M N O N M L 
M N O N M 
N O N 
O 

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Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.