reate the Singly Linked List after having executed the following methods. Each item must have a headand tailreference. Whenever a method is not expected or invalid, write Exception. Only the process not the code •addHead("Dancing") •addHead("Backup") •addHead("Backup") •addTail("Backup") •addTail("Backup") •removeHead()
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Create the Singly Linked List after having executed the following methods. Each item must have a headand tailreference. Whenever a method is not expected or invalid, write Exception. Only the process not the code
•addHead("Dancing")
•addHead("Backup")
•addHead("Backup")
•addTail("Backup")
•addTail("Backup")
•removeHead()
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- Create the Singly Linked List after having executed the following methods. Each item must have a headand tailreference. Whenever a method is not expected or invalid, write Exception. Only the process not the code•addTail("Football")•removeHead()Create the Singly Linked List after having executed the following methods. Each item must have a headand tailreference. Whenever a method is not expected or invalid, write Exception. Only the process not the code •addTail("Bungee")•addTail("Yeti")•addTail("Screendoor")•addTail("Ladder")•removeHead()•addHead("Flag")•addHead("Ducky Tube")•addHead("Snorkel")in Jave create a method work() with the follow instructions: If the work() method is passed a non-null then it must return a new List that contains some or all of the elements in data. The elements of the new List must be aliases for (not copies of) the objects in the List it is passed. If there are no sign attributes (i.e., the array is null or has 0 elements) then the work() method must return an empty List. If any of the conditions represented by the sign attribute holds for a particular element that that element must be included in the result (i.e., the conditions must be combined using a logical OR). The elements in the returned List must be in the same order they appeared in the original List (though not all elements must be in the result). public List<T> work(List<T> g){
- addCourse: accepts an object of type Course as the first parameter and the idNum of the Student as the second parameter. The Course can be added only if the Student object with the specified idNum exists in the studentsList, Course does not exist in the coursesRegistered list for the Student, After adding the course, the number of credits, do not exceed 18. If the course is added successfully, return true, else return false.code: public class PasswordGeneratorAndStorage {/*** Adds an application to the applications ArrayList. If index is -1, add application* to the end of applications. Else is index is within the size of applications, add* application at that index in applications. Otherwise, return. However, if applications * or application is null, return.* * @param applications* @param application* @param index*/public static void addApplication(ArrayList<String> applications, String application, int index) {// TODO: FILL IN BODY}/*** Generates a random password of length passwordLength and adds it to the end of* passwords if index is -1, or adds it to the index of passwords if index is within the* size of passwords (similar to how the addApplication adds an application). To generate* the random password, use rand to generate a random int within the size of characters. You* can then use this int to grab the char at that index in characters and concatenate that* to your String password variable.…class SLNode: """ Singly Linked List Node class DO NOT CHANGE THIS CLASS IN ANY WAY """ def __init__(self, value: object, next=None) -> None: self.value = value self.next = next from SLNode import *class SLLException(Exception): """ Custom exception class to be used by Singly Linked List DO NOT CHANGE THIS CLASS IN ANY WAY """ passclass LinkedList: def __init__(self, start_list=None) -> None: """ Initialize new linked list DO NOT CHANGE THIS METHOD IN ANY WAY """ self._head = SLNode(None) # populate SLL with initial values (if provided) # before using this feature, implement insert_back() method if start_list is not None: for value in start_list: self.insert_back(value) def __str__(self) -> str: """ Return content of singly linked list in human-readable form DO NOT CHANGE THIS METHOD IN ANY WAY """ out =…
- Define the grow() method. Add the fillValue to the new cells in the underlying list Each call to grow() should double the physical size. Make sure that the array’s cells use the fillValue when the array’s size is increased. Define the shrink() method. Shrink the size by half but not below the default capacity Remove those garbage cells from the underlying list Make sure that the physical size of the array does not shrink below the user-specified capacity. To test your program run the main() method below in the arrays.py file: def main(): """Test code for modified Array class.""" a = Array(5) print("Physical size:", len(a)) print("Logical size:", a.size()) print("Items:", a) a.grow() print("Items:", a) a.grow() print("Items:", a) a.shrink() print("Items:", a) a.shrink() print("Items:", a) a.shrink() print("Items:", a) if __name__ == "__main__": main() Your program's output should look like the following: Physical size: 5 Logical size: 0 Items: [None, None, None, None, None]…Computer Science create a method +addToList(o:E):void that adds the object (o) to the ArrayList referenced by the instance variable list. create a method +removeFromBackOfList():E that removes the object at the back of the ArrayList and returns it.Lab 20 Removing the first element in a list Start this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Nodes. Complete the code for the removeFirst method, which should remove and return the first element in the linked list. Throw a NoSuchElementException if the method is invoked on an empty list. Use the LinkedListRunner class's main method to test your code. import java.util.NoSuchElementException; public class LinkedList private Node first; public LinkedList () { first = null; } public Object getFirst () if (first == null) { throw new NoSuchElementException (); } return first.data; } public void addFirst (Object element) Node aNode - new Node () ; aNode.data - element; aNode.next = first; first = aNode; public Object removeFirst () // put your code here } public String tostring (). String temp = ""; Node current = first; while (current != nul1) temp = temp + current.data.toString () + '\n'; current =…
- Q8. Write a declaration of a private field named department that can hold an ArrayList. The elements of the ArrayList are of type Student. Write an assignment to the department variable to create an appropriate ArrayList object. Q9. (A) If a collection stores 20 objects, what value would be returned from a call to its size method? (B) Write a method call using get to return the fifth object stored in a collection called department. Q10. Write a method call to add the object held in the variable student1 to a collection department files.Lab 20 Removing the first element in a list Start this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Nodes. Complete the code for the removeFirst method, which should remove and return the first element in the linked list. Throw a NoSuchElementException if the method is invoked on an empty list. Use the LinkedListRunner class’s main method to test your code. import java.util.NoSuchElementException;public class LinkedList{ private Node first; public LinkedList() { first = null; } public Object getFirst() { if (first == null) { throw new NoSuchElementException(); } return first.data; } public void addFirst(Object element) { Node aNode = new Node(); aNode.data = element; aNode.next = first; first = aNode; } public Object removeFirst() { // put your code here } public String toString() { String temp = ""; Node current = first;…NOTE: Do Not Copy From Another Cheggers Need Correct output and source code Direction: 1. Show the ListStackADT<T> interface 2. Create a ListStackDataStrucClass<T> with thefollowing methods: default constructor, overloaded constructor, copy constructor, getTop, setTop, isEmpty, ifEmpty (if empty throw the exception), push, peek, pop, toString. 3. Create a private inner class of ListStack<T> called StackNode<T> with the following methods: default constructor, overloaded constructor, copy constructor, getValue, getNext, setValue, setNext 4. Create a BaseConverter class (non-generic) with the following methods: default constructor, inputPrompt, convert [converts a BaseNumber to a converted String], convertAll [instantiate a String object] , toString, processAndPrint 5. Create a private inner class BaseNumber. The inner class has the following methods: default constructor, overloaded constructor, getNumber, getBase, setNumber, setBase. [Make your…