How to print Hollow Pyramid Pattern in Ruby

How to print Hollow Pyramid Pattern in Ruby ?

Answer

To print a hollow pyramid pattern in Ruby, you can use loops. The outer loop controls the rows, and the inner loops manage the spaces and stars to create the hollow effect.

✐ Examples

1 Hollow Pyramid Pattern (Height: 5) in Ruby

In this example,

Set the number of rows for the pyramid.
Use nested loops: one for rows, one for spaces, and one for stars.
In the inner loops, print spaces for the spaces between stars and print stars for the pyramid edges.
Adjust conditions to print stars only at the pyramid edges and spaces elsewhere to create the hollow effect.
Print each row to create the hollow pyramid pattern.

Ruby Program

def print_hollow_pyramid(rows)
  (1..rows).each do |i|
    pattern = ' ' * ((rows - i) * 2)
    (1..(2 * i - 1)).each do |j|
      if j == 1 || j == (2 * i - 1) || i == rows
        pattern += '* '
      else
        pattern += '  '
      end
    end
    puts pattern
  end
end

print_hollow_pyramid(5)

Output

        * 
      *   * 
    *       * 
  *           * 
* * * * * * * * *

Summary

In this tutorial, we learned How to print Hollow Pyramid Pattern in Ruby language with well detailed examples.

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