if ($head->next == null) {
$head->next = $p;
} else {
$start = $head;
while ($start->next != null) {
$start = $start->next;
}
$start->next = $p;
}
}
return $head;
}
function display($head)
{
$start = $head;
while ($start) {
echo $start->data, ' ';
$start = $start->next;
}
}
}
$T = intval(fgets(STDIN));
$head = null;
$mylist = new Solution();
while ($T-- > 0) {
$data = intval(fgets(STDIN));
$head = $mylist->insert($head, $data);
}
$head = $mylist->removeDuplicates($head);
$mylist->display($head);
