Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Array lists and linked lists are both examples of list implementations. Give an example of a case in which an array list might be preferable over a linked list. Justify your actions in each scenario.
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- Compare an Array, Single Linked List and Circular Linked List. Which is better to use in general and why? Which one is better for implementing a Queue or Stack?arrow_forwardIn 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…arrow_forwardImplement a simple linked list in Python (Write source code and show output) with basic linked list operations like: (a) create a sequence of nodes and construct a linear linked list. (b) insert a new node in the linked list. (b) delete a particular node in the linked list. (c) modify the linear linked list into a circular linked list. Use this template: class Node:def __init__(self, val=None):self.val = valself.next = Noneclass LinkedList:"""TODO: Remove the "pass" statements and implement each methodAdd any methods if necessaryDON'T use a builtin list to keep all your nodes."""def __init__(self):self.head = None # The head of your list, don't change its name. It shouldbe "None" when the list is empty.def append(self, num): # append num to the tail of the listpassdef insert(self, index, num): # insert num into the given indexpassdef delete(self, index): # remove the node at the given index and return the deleted value as an integerpassdef circularize(self): # Make your list circular.…arrow_forward
- What is correct about the difference between arrays and linked lists? O An array has a fixed size but a linked list has dynamic size. O An array can be sorted but a linked list can't O Linked lists are not better than arrays in terms of space complexity. O None of the choicesarrow_forwardGiven the linked list data structure, implement a sub-class TSortedList that makes sure that elements are inserted and maintained in an ascending order in the list. So, given the input sequence {1,7,3,11,5}, when printing the list after inserting the last element it should print like 1, 3, 5, 7, 11. Note that with inheritance, you have to only care about the insertion situation as deletion should still be handled by the parent class.arrow_forwardThe nodes of the strongest linkedlist are undetermined.Is one especially lengthy?arrow_forward
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