| @@ 411-428 (lines=18) @@ | ||
| 408 | * | |
| 409 | * @return mixed the data stored in the node. | |
| 410 | */ | |
| 411 |     private function deleteEnd() { | |
| 412 | $prev = $this->head; | |
| 413 | $current = $this->head; | |
| 414 | ||
| 415 |         while($current !== $this->tail) { | |
| 416 | $prev = $current; | |
| 417 | $current = $current->next; | |
| 418 | } | |
| 419 | ||
| 420 | $temp = $current; | |
| 421 | $prev->next = &$this->head; | |
| 422 | $this->tail = &$prev; | |
| 423 | $current = null; | |
| 424 | ||
| 425 | $this->size--; | |
| 426 | ||
| 427 | return $temp->data; | |
| 428 | } | |
| 429 | ||
| 430 | /** | |
| 431 | * Deletes the first node of the list and returns it. | |
| @@ 432-450 (lines=19) @@ | ||
| 429 | * | |
| 430 | * @return mixed the data stored in the node. | |
| 431 | */ | |
| 432 |     private function deleteEnd() { | |
| 433 | $prev = $this->head; | |
| 434 | $current = $this->head; | |
| 435 | ||
| 436 |         while($current !== $this->tail) { | |
| 437 | $prev = $current; | |
| 438 | $current = $current->next; | |
| 439 | } | |
| 440 | ||
| 441 | $temp = $current; | |
| 442 | $prev->next = &$this->head; | |
| 443 | $this->head->prev = &$prev; | |
| 444 | $this->tail = &$prev; | |
| 445 | $current = null; | |
| 446 | ||
| 447 | $this->size--; | |
| 448 | ||
| 449 | return $temp->data; | |
| 450 | } | |
| 451 | ||
| 452 | /** | |
| 453 | * Deletes the first node of the list and returns it. | |