/**
* Constructs a new set containing the elements in the specified collection.
*/
public function HashSet1(Collection $c)
{
$this->__construct();
for ($i = $c->iterator(); $i->hasNext(); $i->next()) {
$this->add($i->current());
}
}
/**
* Removes from this set all of its elements that are contained in the specified collection (optional operation).
*/
public function removeAll(Collection $c)
{
for ($i = $c->iterator(); $i->hasNext(); $i->next()) {
if (in_array($i->current(), $this->set)) {
unset($this->set[$i->current()]);
}
}
}
public function addAll1($index, Collection $c)
{
$a = $c->toArray();
$numNew = count($a);
if ($numNew == 0) {
return false;
}
$this->modCount++;
$successor = $index == $this->size ? $this->header : $this->entry($index);
$predecessor = $successor->previous;
for ($i = 0; $i < $numNew; $i++) {
$e = new Entry($a[$i], $successor, $predecessor);
$predecessor->next = $e;
$predecessor = $e;
}
$successor->previous = $predecessor;
$this->size += $numNew;
return true;
}
/**
* Returns true if this Vector contains all of the elements in the specified Collection.
*
* @specified containsAll in interface List
* @overrides containsAll in class AbstractCollection
* @parm c a collection whose elements will be tested for containment in this Vector
* @returns true if this Vector contains all of the elements in the specified collection.
* @throws NullPointerException if the specified collection is null.
*/
public function containsAll(Collection $collection)
{
$ct = $collection->iterator();
while ($ct->hasNext()) {
if (!$this->contains($ct->current())) {
return false;
}
$ct->next();
}
return true;
}