Java Program to Print Right Pascals Triangle Alphabets Pattern

Write a Java program to print right pascals triangle alphabets pattern using for loop.

package Alphabets;

import java.util.Scanner;

public class RightPascalTriAlp1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Right Pascal Triangle of Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("The Right Pascal Triangle Alphabets Pattern");
		
		int i, j, alphabet = 65;
		
		for (i = 0; i <= rows - 1; i++) 
		{
			for (j = 0; j <= i; j++ ) 	
			{
				System.out.print((char)(alphabet + j) + " ");
			}
			System.out.println();
		}
		
		for (i = rows - 1; i >= 0; i--) 
		{
			for (j = 0; j < i; j++ ) 	
			{
				System.out.print((char)(alphabet + j) + " ");
			}
			System.out.println();
		}
	}
}
Java Program to Print Right Pascals Triangle Alphabets Pattern

This Java program prints the right pascals triangle pattern of alphabets using while loop.

package Alphabets;

import java.util.Scanner;

public class RightPascalTriAlp2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Right Pascal Triangle of Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("The Right Pascal Triangle Alphabets Pattern");
		
		int i, j, alphabet = 65;
		i = 0;
		
		while( i <= rows - 1) 
		{
			j = 0;
			while(j <= i ) 	
			{
				System.out.print((char)(alphabet + j) + " ");
				j++;
			}
			System.out.println();
			i++;
		}
		
		i = rows - 1;
		while( i >= 0) 
		{
			j = 0;
			while(j < i) 	
			{
				System.out.print((char)(alphabet + j) + " ");
				j++;
			}
			System.out.println();
			i--;
		}
	}
}
Enter Right Pascal Triangle of Alphabets Rows = 13
The Right Pascal Triangle Alphabets Pattern
A 
A B 
A B C 
A B C D 
A B C D E 
A B C D E F 
A B C D E F G 
A B C D E F G H 
A B C D E F G H I 
A B C D E F G H I J 
A B C D E F G H I J K 
A B C D E F G H I J K L 
A B C D E F G H I J K L M 
A B C D E F G H I J K L 
A B C D E F G H I J K 
A B C D E F G H I J 
A B C D E F G H I 
A B C D E F G H 
A B C D E F G 
A B C D E F 
A B C D E 
A B C D 
A B C 
A B 
A 

This Java example uses the do while loop to display the right pascals triangle of alphabets pattern.

package Alphabets;

import java.util.Scanner;

public class RightPascalTriAlp3 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Right Pascal Triangle of Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("The Right Pascal Triangle Alphabets Pattern");
		
		int i, j, alphabet = 65;
		i = 0;
		
		do 
		{
			j = 0;
			do 	
			{
				System.out.print((char)(alphabet + j) + " ");

			} while(++j <= i );
			
			System.out.println();

		} while(++i <= rows - 1);
		
		i = rows - 1;
		do
		{
			j = 0;
			do 	
			{
				System.out.print((char)(alphabet + j) + " ");

			} while(++j < i);
			System.out.println();

		} while(--i >= 0);
	}
}
Enter Right Pascal Triangle of Alphabets Rows = 15
The Right Pascal Triangle Alphabets Pattern
A 
A B 
A B C 
A B C D 
A B C D E 
A B C D E F 
A B C D E F G 
A B C D E F G H 
A B C D E F G H I 
A B C D E F G H I J 
A B C D E F G H I J K 
A B C D E F G H I J K L 
A B C D E F G H I J K L M 
A B C D E F G H I J K L M N 
A B C D E F G H I J K L M N O 
A B C D E F G H I J K L M N 
A B C D E F G H I J K L M 
A B C D E F G H I J K L 
A B C D E F G H I J K 
A B C D E F G H I J 
A B C D E F G H I 
A B C D E F G H 
A B C D E F G 
A B C D E F 
A B C D E 
A B C D 
A B C 
A B 
A 
A 

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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.