Hello, I need help writing a recursive subroutine that will return an array. I would like to do something similar to PHP's array_chunk. Let's say I have a list of elements:

@list = ( 'a' .. 'z' );
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I want to set a limit of 5 characters for each array element separated by spaces and ending in a comma if the array will have more elements following it. The expected output:

a b c d e, # arr[0]
f g h i j, # arr[1]
k l m n o, # arr[2]
p q r s t, # arr[3]
u v w x y, # arr[4]
z          # arr[5]
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So far, I have achieved this output by returning a string separated by newlines. I could get a list at this point by splitting on newline, but I would like to get a list instead. The only problem is that I am not sure how to return a list using recursion. My code so far:

#!usr/bin/perl

use strict;
use warnings;

my @list = ( 'a' .. 'z' );
my $string_chunk5 = _string_chunk5( @list );
my @array_chunk5 = _array_chunk5( @list );
print "String chunk of 5 =\n$string_chunk5\n";
print "Array chunk of 5 =\n@array_chunk5\n";

sub _string_chunk5 {
    my @arr = @_; 
    return join( " ", @arr ) unless @arr > 5;
    return join( " ", splice( @arr, 0, 5 ) ). ",\n" . _string_chunk5( 
+@arr );  
}

sub _array_chunk5 {
    my @arr = @_; 
    # Base case == when @arr is <= 5
    return ( join( " ",  @arr ) ) unless @arr > 5;
    # what goes here ?
}
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Any pointers would be a great help. Thank you for your time.

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