Java Program to Print Pyramid Pattern of Numbers

This article is created to cover a program in Java that prints pyramid pattern of numbers.

Pyramid Pattern of Numbers in Java

The question is, write a Java program to print pyramid of number. Following program is its answer:

public class fresherearth
{
   public static void main(String[] args)
   {
      int i, space, j, num=1;
      for(i=0; i<5; i++)
      {
         for(space=i; space<5; space++)
            System.out.print(" ");
         for(j=0; j<(i+1); j++)
            System.out.print(num+ " ");
         System.out.print("\n");
      }
   }
}

The snapshot given below shows the sample output produced by above Java program:

Now let's modify the above program, to allow user to define the size of pyramid, along with the number to form the same pyramid, of given size, with given number:

import java.util.Scanner;

public class fresherearth
{
   public static void main(String[] args)
   {
      int tot, i, space, j, num;
      Scanner s = new Scanner(System.in);
      
      System.out.print("Enter the Number of Rows (Line): ");
      tot = s.nextInt();
      System.out.print("Enter the Number to Form Pyramid: ");
      num = s.nextInt();
      
      for(i=0; i<tot; i++)
      {
         for(space=i; space<tot; space++)
            System.out.print(" ");
         for(j=0; j<(i+1); j++)
            System.out.print(num+ " ");
         System.out.print("\n");
      }
   }
}

The sample run of above program with user input 11 as number of lines and 5 as number to form pyramid that are of 11 rows or lines, is shown in the snapshot given below:

Full Pyramid Pattern of Number in Java

This is the last program of this article, created to print the full pyramid pattern using a given number. The pyramid printed using this program, provides the actual look of pyramid.

import java.util.Scanner;

public class fresherearth
{
   public static void main(String[] args)
   {
      int i, row, k, j, num;
      Scanner s = new Scanner(System.in);
      
      System.out.print("Enter the Number of Rows (Line): ");
      row = s.nextInt();
      System.out.print("Enter a Number Form Pyramid: ");
      num = s.nextInt();
      
      for(i=0; i<row; i++)
      {
         for(k=i; k<row; k++)
            System.out.print(" ");
         for(j=0; j<(i+1); j++)
            System.out.print(num+ " ");
         System.out.print("\n");
      }
      for(i=row; i>0; i=(i-2))
      {
         for(k=row; k>=(i-1); k--)
            System.out.print(" ");
         for(j=(i-1); j>0; j--)
            System.out.print(num+ " ");
         System.out.print("\n");
      }
   }
}

The snapshot given below shows the sample run of above program with user input 12 as number of lines and 8 as number to form complete pyramid:

Note - For more pyramid pattern using number, refer to Pyramid Pattern of Stars in Java. The only change to do, is replace the star with desired number.

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