How to print Hollow Pyramid Pattern in Perl

How to print Hollow Pyramid Pattern in Perl ?

Answer

To print a hollow pyramid pattern in Perl, 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 Perl

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.

Perl Program

#!/usr/bin/perl
use strict;
use warnings;

sub print_hollow_pyramid {
    my $rows = shift;
    for my $i (1..$rows) {
        my $pattern = ' ' x (($rows - $i) * 2);
        for my $j (1..(2 * $i - 1)) {
            if ($j == 1 || $j == (2 * $i - 1) || $i == $rows) {
                $pattern .= '* ';
            } else {
                $pattern .= '  ';
            }
        }
        print "$pattern\n";
    }
}

print_hollow_pyramid(5);

Output

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

Summary

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

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