Java Program to Print Triangle of Mirrored Numbers Pattern

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

package Shapes3;

import java.util.Scanner;

public class TriangleMirroredNum1 {

	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Traingle Mirrored Numbers Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Traingle of Mirrored Numbers Pattern");
		
		for (int i = 1; i <= rows; i++ ) 
		{
			for (int j = rows; j > i; j-- ) 
			{
				System.out.print(" ");
			}
			for(int k = 1; k <= i; k++) 
			{
				System.out.print(k);
			}
			for(int l = i - 1; l >= 1; l--)
			{
				System.out.print(l);
			}
			System.out.println();
		}
	}
}
Java Program to Print Triangle of Mirrored Numbers Pattern

This Java pattern example prints the triangle of mirrored numbers using while loop.

package Shapes3;

import java.util.Scanner;

public class TriangleMirroredNum2 {

	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Traingle Mirrored Numbers Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Traingle of Mirrored Numbers Pattern");
		int j, k, l, i = 1;
		
		while(i <= rows) 
		{
			j = rows;
			while(j > i) 
			{
				System.out.print(" ");
				j--;
			}
			
			k = 1; 
			while(k <= i) 
			{
				System.out.print(k);
				k++;
			}
			
			l = i - 1;
			while(l >= 1)
			{
				System.out.print(l);
				l--;
			}
			
			System.out.println();
			i++;
		}
	}
}
Enter Traingle Mirrored Numbers Rows = 9
Printing Traingle of Mirrored Numbers Pattern
        1
       121
      12321
     1234321
    123454321
   12345654321
  1234567654321
 123456787654321
12345678987654321

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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.