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#!/usr/bin/perl
# Perl Weekly Challenge - 068
#
# Task 1 - ReorderList
#
# Author: Niels 'PerlBoy' van Dijke
use strict;
use warnings;
use Data::LinkedList;
sub printList ($$);
sub reorderList ($);
my @L = qw(L0 L1 L2 L3 L4 L5 L6 L7);
my $ll = Data::LinkedList->new();
$ll->add_all(@L);
printList('Input', $ll);
reorderList($ll);
printList('Output', $ll);
sub printList ($$) {
my ($label, $myLl) = @_;
printf "$label: %s\n", join(' -> ', $myLl->to_array);
}
sub reorderList ($) {
my ($myLl) = @_;
my $size = $myLl->size;
my $i = 1;
while ($i < $size) {
$myLl->insert($i, $myLl->remove_last);
$i += 2;
}
}
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