One implementation of the LIST ADT Insert new node before current and new node becomes current (assume new node created) node newNode = new node; head current

One implementation of the LIST ADT head current prev = head; while (prev->next != current) prev = prev->next; prev

One implementation of the LIST ADT head current prev = head; while (prev->next != current) prev = prev->next; prev

One implementation of the LIST ADT head current node newNode = new node; prev->next = newNode; prev newNode

One implementation of the LIST ADT head current node newNode = new node; prev->next = newNode; newNode->next = current; prev newNode

One implementation of the LIST ADT head current node newNode = new node; prev->next = newNode; newNode->next = current; current = newNode; prev newNode

One more implementation of the LIST ADT Circular single linked list tail Start function. current = tail->link;

One more implementation of the LIST ADT Doubly linked list head current Insert new node before current and new node becomes current (assume new node created) node newNode = new node;

One more implementation of the LIST ADT Doubly linked list head current newNode->prev=current->prev; newNode

One more implementation of the LIST ADT Doubly linked list head current newNode->prev=current->prev; newNode->next=current; newNode

One more implementation of the LIST ADT Doubly linked list head current newNode->prev=current->prev; newNode->next=current; newNode->prev->next = newNode; newNode

One more implementation of the LIST ADT Doubly linked list head current newNode->prev=current->prev; newNode->next=current; newNode->prev->next = newNode; current->prev = newNode; newNode

One more implementation of the LIST ADT Doubly linked list head current newNode->prev=current->prev; newNode->next=current; newNode->prev->next = newNode; current->prev = newNode; current = newNode; newNode