1. Create a doubly-linked list of string and add the following methods Add at the head b. Add at the tail Remove from head Remove from tail
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- 1 Assume some Node class with info & link fields. Complete this method in class List that returns a reference to the node containing the data item in the argument find This, Assume that find this is in the list public class List { protected Node head; protected int size; fublic Public Node find (char find This)5. List Member Deletion Modify the list class you created in the previous programming challenges by adding a function to remove an item from the ist and by adding a destructor: void zemove (double x) : Linkedtist (02 Test the class by adding a sequence of instructions that mixes operations for adding items, removing items, and printing the list.class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here
- PYTHON LAB: Inserting an integer in descending order (doubly-linked list) Given main.py and an IntNode class, complete the IntList class (a linked list of IntNodes) by writing the insert_in_descending_order() method to insert new IntNodes into the IntList in descending order. Ex. If the input is: 3 4 2 5 1 6 7 9 8 the output is: 9 8 7 6 5 4 3 2 1 _____________________________________________________________________________________ Main.py: from IntNode import IntNode from IntList import IntList if __name__ == "__main__": int_list = IntList() input_line = input() input_strings = input_line.split(' ') for num_string in input_strings: # Convert from string to integer num = int(num_string) # Insert into linked list in descending order new_node = IntNode(num) int_list.insert_in_descending_order(new_node) int_list.print_int_list() IntNode.py class IntNode: def __init__(self, initial_data, next = None,…PLEASE CODE IN PYTHON PLEASE USE NESTED CLASS FUNCTION Design a Point Class with attributes X and Y coordinates. The Class should have following functions: a) change the coordinates, b) return a 2 element list [x,y] c) print a Point object. d) return distance from this instance to a given [x,y] Also design a Line Class which has 2 Point attributes. The Line class should have functions for following behaviours: a) Return the length of the line. b) Print the equation of the line c) Find if this instance is equal in length to another line.19. Write a recursive (no "while" or "for" or any looping statement) method "frequency", which takes as parameters an IntNode myList and an integer element and returns the number of times the integer element appears in myList. public class IntNode. { private int m_data; private IntNode m link; public IntNode (int data, IntNode link) { m data data; m link link; } public int getInfo() {return m_data; } public IntNode getLink () {return m_link; } } public int frequency (IntNode myList, int element) {
- 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; };1.Assume some Node class with info link fields . Complete this method in class List that returns a reference to the node containing the data item in the argument findThis, Assume that findThis is in the list public class list { protected Node head ; Protected int size ; Public Node find (char find this) { Node curr = head; while(curr != null) { if(curr.info == findThis) return curr; curr = curr.link; } return -1; } }C++ The List class represents a linked list of dynamically allocated elements. The list has only one member variable head which is a pointer that leads to the first element. See the following code for the destructor to List. ~ List () { for (int i = 0; i <size (); i ++) { pop_back (); } } What problems does the destructor have? Select one or more options: 1. There are no parameters for the destructor. 2. The return value from pop_back (if any) is nerver handled. 3. The destructor will create a stack overflow. 4. The destructor will create dangling pointers. 5.The destructor will create memory leaks. 6.The destructor will create undefined behavior (equivalent to zero pointer exception). 7.The condition must be: i <size () - 1 8. There is at least one problem with the destructor, but none of the above.
- LABEL: 120 The class MyList has three dynamic member variables. Given the code segment below, which function will be invaked at line 5, assuming that the Big Three were implemented? The type of element in the list is irrelevant. 1 Mylist nums; 2 nums.append(10); 3 nums. append(20); 4 nums. append( 30); 5 MyList result; O The copy constructor The overloaded assignment operator O The default assignment operator The default constructor The destructorLAB: Finding an integer in a list (singly-linked list) Given main() and an IntNode class, complete the IntList class by writing the append() and search() methods. The search() method should return the IntNode whose data value matches a given key, and null if the key is not found. The search() method should also set the position of each IntNode searched in the IntList, starting with 1. Ex: If the input is: 12 23 59 37 923 2 -1 12 the output is: 12 found in list at position 1. If the input is: 12 23 59 37 923 2 -1 68 the output is: 68 not found in list. ______________________________________ import java.util.Scanner; public class SearchList {public static void main (String[] args) {Scanner scnr = new Scanner(System.in);IntList intList = new IntList();IntNode curNode, foundNode;int num, searchNum;num = scnr.nextInt();while (num != -1) {// Insert into linked listcurNode = new IntNode(num);intList.append(curNode);num = scnr.nextInt();}searchNum = scnr.nextInt();foundNode =…private static final List<Polynomial> polyList = new ArrayList<>(); //main here public static void main(String[] args) { processPolyList(); } //=============================================================================================== // method: fromFile / returns: Arraylist // description: Opens a file takes a String and tokenizes it into an ArrayList of of expressions //=============================================================================================== public static ArrayList<String> f