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Java Program to Print Pyramid Pattern of Numbers



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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 CodesCracker
{
   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:

java pyramid pattern of numbers

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 CodesCracker
{
   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:

java program print pyramid of numbers

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 CodesCracker
{
   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:

java print full pyramid of numbers

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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