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- I ASK THIS QUESTION HERE AND YOUR EXPERT SOLVE IT THIS WAY BUT CAN YOU WRITE THE main ( ) FOR THIS CODE Consider the following implementation of the node and doubly linked-list: template <class type>class node{public:type info;node<type> * next;// nextnode<type> * prev;//back }; template <class type>class doubly_linked_list{//data membersprivate:node<type> *head, *tail;int length;public:doubly_linked_list(){head = tail = NULL;length = 0;}bool isEmpty(){ // return (head==NULL);if (head == NULL)return true;elsereturn false;} void Append(type e){node<type> *newnode = new node<type>;newnode->info = e;if (isEmpty()){newnode->next = NULL;newnode->prev = NULL;head = newnode;tail = newnode;}else{tail->next = newnode;newnode->prev = tail;newnode->next = NULL;tail = newnode;}++length; } void Display(){if (isEmpty()) { cout << "The linked list is empty !!!!"; return; }cout << "list elements: ";node<type> *…Q4 Suppose, alist is a 2-dimensional list that is defined as follows. alist = [ [1], [2,3], [5,6,7] ] Which is the best option to access the last element of the last element of this list (i.e., 7)? Question 4 options: alist[ len(alist) - 1 ][len(alist[len(alist) - 1]) - 1] alist[ len(alist) - 1 ][len(alist[len(alist) - 1])] alist[3][3] alist[ len(alist) - 1 ][1]Using java, write an easier version of a linked list with only a couple of the normal linked list functions and the ability to generate and utilize a list of ints. The data type of the connection to the following node can be just Node, and the data element can be just an int. You will need a reference like (Java) or either a reference to the first node, as well as one to the last node. (Answer the following questions) 1) Create a method or function that accepts an integer, constructs a node with that integer as its data value, and then includes the node to the end of the list. If the new node is the first one, this function will also need to update the reference to the first node. This function will need to update the reference to the final node. Consider how to insert the new node following the previous last node, and keep in mind that the next reference for the list's last node should be null. 2) Create a different method or function that iteratively explores the list, printing…
- Write java code to do the following: Implement the Quicksort algorithm for both generic lists and generic arrays: Please note you cannot make any additional FUNCTIONS OR METHODS, Everything must be housed within the functions I have provided below: public static <T extends Comparable<T>> void quickSort(final List<T> list, final Comparator<T> comparator) {...} public static <T extends Comparable<T>> void quickSort(final T[] array, final Comparator<T> comparator) {...}1- Start by writing your choice from the list given above. Part a. Explain the important technical details about your choice. 2-(continued) Start by again writing your choice from the list given above. Part b. Most of the ADTs in this class were implemented using arrays and linked lists. If appropriate for the ADT you chose in part a., explain which one (an array or a linked list) you would choose to implement it and why. If it doesn’t make sense to implement your ADT using an array or a linked list, explain which other data structure you would use to implement your ADT.Given the following definitions that we have used in class to represent a doubly-linked, circular List with a dummy-header node that contains data of type "struct Student". typedef struct { char *name; char *major; } Student;typedef struct node { Student *data; struct node *next; struct node *prev; } Node;typedef struct { Node *header; int size; } LinkedList;LinkedList *roster; Here is a picture of what the Linked List might look like, although you should answer the following question for a general list (ie, that does not necessarily contain 3 data items). What TYPE of data is the following: *roster Group of answer choices int int * Node Node * Student Student * char char * This is legal code, but it does not match any of the types listed above. This is illegal code, and would produce a syntax error No hand written solution and no image
- Given the following definitions that we have used in class to represent a doubly-linked, circular List with a dummy-header node that contains data of type "struct Student". typedef struct { char *name; char *major; } Student; typedef struct node { Student *data; struct node *next; struct node *prev; } Node; typedef struct { Node *header; int size; } LinkedList; LinkedList *roster; Here is a picture of what the Linked List might look like, although you should answer the following question for a general list (ie, that does not necessarily contain 3 data items). What TYPE of data is the following: roster->header->data->next->next Group of answer choices int int * Node Node * Student Student * char char * This is legal code, but it does not match any of the types listed above. This is illegal code, and would produce a syntax error.how to answer the following question in java screen shot shows the ABList class Suppose a list names contains 8 elements. A call to names.set(8, "Albert") results in: A. an exception being thrown. B. an 8 element list with "Albert" as the last element. C. a 9 element list with "Albert" as the last element. D. a 9 element list with "Albert" as the next to last element. The only index-related method of the ABList class that can make good use of the protected find method is: A. add B. set C. get D. indexOf E. remove An application can indicate that it wants to use the "natural order" to order the elements of a SortedABList list by: A. passing the constructor an appropriate compareTo method. B. using the parameter-less constructor. C. using the standard list iteration approach. D. always adding elements to the front of the list. Suppose a list names contains 8 elements. A call to names.add(9, "Albert") results in: A. an exception being…Writing a program that helps to enter patients information:● Write a class patientInfo which contains the following data and methods:• Data:PatientName (String).PatientID (int).• Methods:Getter and Setter for each data item.toString method.● Display this menu:1:Merging two Single Linked List structure type2:Merging two Stacks data structure type3:Merging two Queses data structure type4:Merging Single Linked List with Stack to Linked List5:Merging Single Linked List with Queue to Linked List6:Merging Singly Linked List with Stack only Patient’s name that start with S to Queue● Ask the user to choose the data structure type from a given list to be merged.If you choose any of the above options:1.You must request [the size of data structures and patient information] from the user.2. Print the data structure before the merge.3. Print data structure after the merge.
- Write a class TouristSpot that has the data members; name of tourist spot, state in which it lies. Create an array list of n places and write a function that takes array list as an argument to identify a state that has more than one tourist spot. Java ProgramI'm trying to understand LargeIntList classes for lists, I was wondering these statements or True or False? either or, can you please explain your answers? Thank you. Uses the “by copy” approach with its elements. Implements the ListInterface interface. Keeps its data elements sorted. Allows duplicate elements. Uses the LLNode class of the support package. Throws an exception if an iteration “walks off ” the end of the list. Throws an exception if an element is added when it is "full". Supports addition of elements at the front of the list, the end of the list, and anywhere in between. Can hold objects of any Java class. Has only O(1) operations, including its constructor. Provides more than one Iterator.Suppose, alist is a 2-dimensional list that is defined as follows. alist = [ [1], [2,3], [5,6,7] ] Which is the best option to access the last element of the last element of this list (i.e., 7)? Question options: a. alist[ len(alist) - 1 ][len(alist[len(alist) - 1]) - 1] b. alist[ len(alist) - 1 ][len(alist[len(alist) - 1])] c. alist[3][3] d. alist[ len(alist) - 1 ][1]