-public:
- ModelList() : head(NULL),
- tail(NULL) {
- }
-
- void push_front(_Tp val) {
- mllnode<_Tp> * tmp = new mllnode<_Tp>();
- tmp->prev = NULL;
- tmp->next = head;
- tmp->val = val;
- if (head == NULL)
- tail = tmp;
- else
- head->prev = tmp;
- head = tmp;
- }
-
- void push_back(_Tp val) {
- mllnode<_Tp> * tmp = new mllnode<_Tp>();
- tmp->prev = tail;
- tmp->next = NULL;
- tmp->val = val;
- if (tail == NULL)
- head = tmp;
- else tail->next = tmp;
- tail = tmp;
- }
-
- void insertAfter(mllnode<_Tp> * node, _Tp val) {
- mllnode<_Tp> *tmp = new mllnode<_Tp>();
- tmp->val = val;
- tmp->prev = node;
- tmp->next = node->next;
- node->next = tmp;
- if (tmp->next == NULL) {
- tail = tmp;
- } else {
- tmp->next->prev = tmp;
- }
- }
-
- void insertBefore(mllnode<_Tp> * node, _Tp val) {
- mllnode<_Tp> *tmp = new mllnode<_Tp>();
- tmp->val = val;
- tmp->next = node;
- tmp->prev = node->prev;
- node->prev = tmp;
- if (tmp->prev == NULL) {
- head = tmp;
- } else {
- tmp->prev->next = tmp;
- }
- }
-
- void erase(mllnode<_Tp> * node) {
- if (head == node) {
- head = node->next;
- } else {
- node->prev->next = node->next;
- }
-
- if (tail == node) {
- tail = node->prev;
- } else {
- tail->next->prev = node->prev;
- }
-
- delete node;
- }
-
- mllnode<_Tp> begin() {
- return head;
- }
-
- mllnode<_Tp> end() {
- return tail;
- }
-
- _Tp front() {
- return head->val;
- }
-
- _Tp back() {
- return tail->val;
- }
-
-
- MEMALLOC;
- private:
- mllnode<_Tp> *head;
- mllnode<_Tp> *tail;
+public:
+ ModelList() : head(NULL),
+ tail(NULL), _size(0) {
+ }
+
+ void push_front(_Tp val) {
+ mllnode<_Tp> * tmp = new mllnode<_Tp>();
+ tmp->prev = NULL;
+ tmp->next = head;
+ tmp->val = val;
+ if (head == NULL)
+ tail = tmp;
+ else
+ head->prev = tmp;
+ head = tmp;
+ _size++;
+ }
+
+ void push_back(_Tp val) {
+ mllnode<_Tp> * tmp = new mllnode<_Tp>();
+ tmp->prev = tail;
+ tmp->next = NULL;
+ tmp->val = val;
+ if (tail == NULL)
+ head = tmp;
+ else tail->next = tmp;
+ tail = tmp;
+ _size++;
+ }
+
+ void pop_front() {
+ mllnode<_Tp> *tmp = head;
+ head = head->next;
+ if (head == NULL)
+ tail = NULL;
+ else
+ head->prev = NULL;
+ delete tmp;
+ _size--;
+ }
+
+ void pop_back() {
+ mllnode<_Tp> *tmp = tail;
+ tail = tail->prev;
+ if (tail == NULL)
+ head = NULL;
+ else
+ tail->next = NULL;
+ delete tmp;
+ _size--;
+ }
+
+ void clear() {
+ while(head != NULL) {
+ mllnode<_Tp> *tmp=head->next;
+ delete head;
+ head = tmp;
+ }
+ tail=NULL;
+ _size=0;
+ }
+
+ void insertAfter(mllnode<_Tp> * node, _Tp val) {
+ mllnode<_Tp> *tmp = new mllnode<_Tp>();
+ tmp->val = val;
+ tmp->prev = node;
+ tmp->next = node->next;
+ node->next = tmp;
+ if (tmp->next == NULL) {
+ tail = tmp;
+ } else {
+ tmp->next->prev = tmp;
+ }
+ _size++;
+ }
+
+ void insertBefore(mllnode<_Tp> * node, _Tp val) {
+ mllnode<_Tp> *tmp = new mllnode<_Tp>();
+ tmp->val = val;
+ tmp->next = node;
+ tmp->prev = node->prev;
+ node->prev = tmp;
+ if (tmp->prev == NULL) {
+ head = tmp;
+ } else {
+ tmp->prev->next = tmp;
+ }
+ _size++;
+ }
+
+ mllnode<_Tp> * erase(mllnode<_Tp> * node) {
+ if (head == node) {
+ head = node->next;
+ } else {
+ node->prev->next = node->next;
+ }
+
+ if (tail == node) {
+ tail = node->prev;
+ } else {
+ node->next->prev = node->prev;
+ }
+ mllnode<_Tp> *next = node->next;
+ delete node;
+ _size--;
+ return next;
+ }
+
+ mllnode<_Tp> * begin() {
+ return head;
+ }
+
+ mllnode<_Tp> * end() {
+ return tail;
+ }
+
+ _Tp front() {
+ return head->val;
+ }
+
+ _Tp back() {
+ return tail->val;
+ }
+
+ uint size() {
+ return _size;
+ }
+
+ bool empty() {
+ return _size == 0;
+ }
+
+ MEMALLOC;
+private:
+ mllnode<_Tp> *head;
+ mllnode<_Tp> *tail;
+ uint _size;