Java Program to Print Right Pascals Star Triangle

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

package ShapePrograms2;

import java.util.Scanner;

public class RightPascal1 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		int i, j;
		
		System.out.print("Enter Right Pascals Triangle Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Pascals Triangle Star Pattern");
		
		for (i = 0 ; i < rows; i++ ) 
		{
			for (j = 0 ; j <= i; j++ ) 
			{
				System.out.print("* ");
			}
			System.out.println();
		}
		
		for (i = rows - 1; i >= 0; i-- ) 
		{
			for (j = 0 ; j <= i - 1; j++ ) 
			{
				System.out.print("* ");
			}
			System.out.println();
		}
	}
}

This Java example displays the stars in the right pascals triangle pattern using a while loop.

package ShapePrograms2;

import java.util.Scanner;

public class RightPascal2 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Right Pascals Triangle Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Pascals Triangle Star Pattern");
		int j, i = 0;
		
		while(i < rows ) 
		{
			j = 0 ;
			
			while( j <= i ) 
			{
				System.out.print("* ");
				j++;
			}
			System.out.println();
			i++;
		}
		
		i = rows - 1; 
		while (i >= 0) 
		{
			j = 0 ;
			while ( j <= i - 1 ) 
			{
				System.out.print("* ");
				j++;
			}
			System.out.println();
			i--;
		}
	}
}

Enter Right Pascals Triangle Pattern Rows = 8
Printing Right Pascals Triangle Star Pattern
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * * * 
* * * * * * * 
* * * * * * * * 
* * * * * * * 
* * * * * * 
* * * * * 
* * * * 
* * * 
* * 
* 

Java program to print right pascals star triangle using do while loop.

package ShapePrograms2;

import java.util.Scanner;

public class RightPascal3 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Right Pascals Triangle Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Pascals Triangle Star Pattern");
		int j, i = 0;
		
		do 
		{
			j = 0 ;
			
			do
			{
				System.out.print("* ");

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

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

			} while ( ++j <= i - 1 );
			
			System.out.println();

		} while (--i > 0);
	}
}

Enter Right Pascals Triangle Pattern Rows = 9
Printing Right Pascals Triangle Star Pattern
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * * * 
* * * * * * * 
* * * * * * * * 
* * * * * * * * * 
* * * * * * * * 
* * * * * * * 
* * * * * * 
* * * * * 
* * * * 
* * * 
* * 
* 

In this Java example, the RightPascalTrianglePattern function prints a given symbol’s right pascal triangle pattern.

package ShapePrograms2;

import java.util.Scanner;

public class RightPascal4 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Right Pascals Triangle Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.print("Enter Character for Right Pascals Triangle Pattern = ");
		char ch = sc.next().charAt(0);
		
		System.out.println("Printing Right Pascals Triangle Pattern");
		RightPascalTrianglePattern(rows, ch);	
	}
	
	public static void RightPascalTrianglePattern(int rows, char ch) {
		int i, j;
		
		for (i = 0 ; i < rows; i++ ) 
		{
			for (j = 0 ; j <= i; j++ ) 
			{
				System.out.print(ch + " ");
			}
			System.out.println();
		}
		
		for (i = rows - 1; i >= 0; i-- ) 
		{
			for (j = 0 ; j <= i - 1; j++ ) 
			{
				System.out.print(ch + " ");
			}
			System.out.println();
		}
	}
}

Enter Right Pascals Triangle Pattern Rows = 11
Enter Character for Right Pascals Triangle Pattern = #
Printing Right Pascals Triangle Pattern
# 
# # 
# # # 
# # # # 
# # # # # 
# # # # # # 
# # # # # # # 
# # # # # # # # 
# # # # # # # # # 
# # # # # # # # # # 
# # # # # # # # # # # 
# # # # # # # # # # 
# # # # # # # # # 
# # # # # # # # 
# # # # # # # 
# # # # # # 
# # # # # 
# # # # 
# # # 
# # 
#