In C++ Write the DLList member function bool DLLidt<T>::insert_before(int index, T& x) that is going to insert a node with the value of x before the node at position index in the list.  Example: If the current list is [5, 6, 7, 8] insert_before(2,0); will change the current list to [5,6,0,7,8] **You need to use get_at function, and use it only one time to optimize the call of your code. ** Don’t forget to fix the next, and prev pointers for each node. ** for inserting before 0 index, you may use add_to_head function.

struct node{ int a; struct node * nextptr; };   Write two functions. One for inserting new values to a link list that uses the given node structure. void insert(struct node **head, int value); Second function is called to count the number of even numbers in the link list. It returns an integer that represents the number of even numbers. int countEvenNumbers(struct node *head); Write a C program that reads a number of integers from the user and insert those integers into a link list (use insert function). Later pass the head pointer of this link list to a function called countEvenNumbers. This function counts and returns the number of even numbers in the list. The returned value will be printed on the screen. Note 1: Do not modify the function prototypes.   Sample Input1:          Sample Output1: 45 23 44 12 37 98 33 35 -1 3   Sample Input2:          Sample Output2: 11 33 44 21 22 99 123 122 124 77 -1 4

C++ ProgrammingActivity: Deque Linked List Explain the flow of the code not necessarily every line, as long as you explain what the important parts of the code do. The code is already correct, just explain the flow. #include "deque.h" #include "linkedlist.h" #include <iostream> using namespace std; class DLLDeque : public Deque {    DoublyLinkedList* list;       public:     DLLDeque() {         list = new DoublyLinkedList();      }         void addFirst(int e) {             list->addAt(e,1);          }              void addLast(int e) {             list->addAt(e,size()+1);          }         int removeFirst() {             return list->removeAt(1);          }         int removeLast() {             return list->removeAt(size());          }         int size(){             return list->size();         }              bool isEmpty() {             return list->isEmpty();         }             // OPTIONAL: a helper method to help you debug         void print() {…

for c++ please thank you  please type the code so i can copy and paste easily thanks. 4, List search  Modify the linked listv class you created in the previous programming challange to include a member function named search that returns the position of a specific value, x, in the lined list. the first node in the list is at position 0, the second node is at position 1, and so on. if x is not found on the list, the search should return -1 test the new member function using an approprate driver program. here is my previous programming challange. #include <iostream> using namespace std; struct node { int data; node *next; }; class list { private: node *head,*tail; public: list() { head = NULL; tail = NULL; } ~list() {    } void append() { int value; cout<<"Enter the value to append: "; cin>>value; node *temp=new node; node *s; temp->data = value; temp->next = NULL; s = head; if(head==NULL) head=temp; else { while (s->next != NULL) s = s->next; s->next =…

struct remove_from_front_of_dll { // Function takes no parameters, removes the book at the front of a doubly // linked list, and returns nothing. void operator()(const Book& unused) { //// TO-DO (13) |||| // Write the lines of code to remove the book at the front of "my_dll", // // Remember, attempting to remove an element from an empty data structure is // a logic error. Include code to avoid that. ///// END-TO-DO (13) //// } std::list& my_dll; };

Computer Science //iterator() creates a new Iterator over this list. It will//initially be referring to the first value in the list, unless the//list is empty, in which case it will be considered both "past start"//and "past end". template <typename ValueType>typename DoublyLinkedList<ValueType>::Iterator DoublyLinkedList<ValueType>::iterator(){//return iterator(head);} //constIterator() creates a new ConstIterator over this list. It will//initially be referring to the first value in the list, unless the//list is empty, in which case it will be considered both "past start"//and "past end". template <typename ValueType>typename DoublyLinkedList<ValueType>::ConstIterator DoublyLinkedList<ValueType>::constIterator() const{//return constIterator(head);} //Initializes a newly-constructed IteratorBase to operate on//the given list. It will initially be referring to the first//value in the list, unless the list is empty, in which case//it will be…

C Language In a linear linked list, write a function named changeFirstAndLast that swaps the node at the end of the list and the node at the beginning of the list. The function will take a list as a parameter and return the updated list.

C++ code Screenshot and output is must

C++ Programming Language ::::::: Redo the same functions this time as nonmember functions please : NOTE: You can add only one function into the linked list class get_at_position which will return value of element at given position. 1) Insert before tail :  Insert a value into a simply linked list, such that it's location will be before tail. So if a list contains {1, 2, 3}, insert before tail value 9 is called, the list will become {1, 2, 9, 3}. 2) Insert before value :  Insert a value into a simply linked list, such that it's location will be before a particular value. So if a list contains {1, 2, 3}, insert before 2 value 9 is called, the list will become {1, 9, 2, 3}. 3)Count common elements : Count common values between two simply linked lists.So if a list1 contains {1, 2, 3, 4, 5}, and list2 contains {1, 3, 4, 6}, number of common elements is 3. 4) Check if sorted : Check if elements of simply linked lists are sorted in ascending order or not.So if a list contains {1, 3, 7, 8, 9}…

Should write in  c language not c++ or not c#