Part (a) Suppose you are implementing a method and the class it is in has a representation invariant. Does th impact your work? Answer YES or NO. If yes, explain how, and if no, explain why not Part (b) Complete the following hypothesis test so that it checks one aspect of list.append. @given(lists(integers()), integers()) def test_append(1st: List, v: int): ""Test that # TODO: Complete the docstring description and implement this function.

Part (a) Suppose you are implementing a method and the class it is in has a representation invariant. Does th impact your work? Answer YES or NO. If yes, explain how, and if no, explain why not Part (b) Complete the following hypothesis test so that it checks one aspect of list.append. @given(lists(integers()), integers()) def test_append(1st: List, v: int): ""Test that # TODO: Complete the docstring description and implement this function.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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In python. Write a LinkedList class that has recursive implementations of the add and remove methods. It should also have recursive implementations of the contains, insert, and reverse methods. The reverse method should not change the data value each node holds - it must rearrange the order of the nodes in the linked list (by changing the next value each node holds). It should have a recursive method named to_plain_list that takes no parameters (unless they have default arguments) and returns a regular Python list that has the same values (from the data attribute of the Node objects), in the same order, as the current state of the linked list. The head data member of the LinkedList class must be private and have a get method defined (named get_head). It should return the first Node in the list (not the value inside it). As in the iterative LinkedList in the exploration, the data members of the Node class don't have to be private. The reason for that is because Node is a trivial class…
Question 5 Assume that the following method is in a class called DLL (not same as KWLinkedList). What does this method do? public void method_LI( ) { KWLinkedList<Integer> list = new KWLinkedList<Integer>( ); list.add(2); list.add(-1); list.add(0); list.add(1); list.add(0); ListIterator<integer> iter = list.listIterator(); while(iter.hasNext()) { if (iter.next() == 0) iter.remove(); } if( iter.hasPrevious() ) System.out.println("END"); else while(iter.hasNext()) System.out.print(iter.next() + " "); } Removes the nodes having 0 as its data and prints END. Removes the nodes having 0 as its data and prints 2 -1 1 Removes the nodes having 0 as its data and prints 1 -1 2 Prints 2 -1 0 1 0 without removing anything.
Can you find objects that support Comparable in an unordered list? What makes you believe that is true?
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Given the source code of linked List, answer the below questions(image): A. Fill out the method printList that print all the values of the linkedList: Draw the linked list. public void printList() { } // End of print method B. Write the lines to insert 10 at the end of the linked list. You must draw the final linked List. Notice that you can’t use second or third nodes. Feel free to define a new node. Assume you have only a head node C. Write the lines to delete node 2. You must draw the final linked list. Notice that you can’t use second or third node. Feel free to define a new node. Assume you have only a head node
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Write the following method in Java: public void reverse() The method will reverse the linked list. Head will point to the last node of the linked list and all the pointers (addresses) will be reversed. The last node (a new head) will point to the second last node and so on. The old head node will become the tail node in the reversed LinkedList. Use the LinkedList class discussed in the video lecture and write the reverse() method in the same class. Test your method in the main method. Following picture depicts the reversal of the LinkedList. NULL Head I V R I ↑ Head > NULL