Data Structures and Algorithms - Singly Linked List Operations in C++
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Questions and Answers

What is the purpose of the isEmpty() function in the SLinkedList class?

  • To create a new linked list with a given value
  • To display the contents of the linked list
  • To insert a new node at the end of the linked list
  • To check if the linked list is empty (correct)

In the insertAtEnd() function, what is the purpose of the while loop that traverses the linked list?

  • To display the contents of the linked list
  • To find the last node in the linked list (correct)
  • To check if the linked list is empty
  • To insert the new node at the beginning of the linked list

What is the purpose of the SLinkedList(int x) constructor in the SLinkedList class?

  • To display the contents of the linked list
  • To create a new linked list with a single node containing the value `x` (correct)
  • To check if the linked list is empty
  • To create a new linked list with the `head` and `tail` pointers set to `NULL`

What is the purpose of the display() function in the SLinkedList class?

<p>To print the contents of the linked list (D)</p> Signup and view all the answers

In the insertAtEnd() function, what happens if the linked list is empty?

<p>The <code>head</code> and <code>tail</code> pointers are set to the new node (D)</p> Signup and view all the answers

What is the purpose of the next pointer in the Node class?

<p>To point to the next node in the linked list (D)</p> Signup and view all the answers

What is the purpose of the insert() function call in the code snippet?

<p>To insert a new node at index 3 of the linked list (C)</p> Signup and view all the answers

What is the total number of nodes in the final linked list after the insert() function call?

<p>6 (C)</p> Signup and view all the answers

What is the purpose of the display() function call in the code snippet?

<p>To display all the nodes in the linked list (D)</p> Signup and view all the answers

What is the key difference between a singly linked list and a doubly linked list?

<p>Singly linked lists can only be traversed in one direction, while doubly linked lists can be traversed in both directions. (C)</p> Signup and view all the answers

Which of the following operations is more efficient in a doubly linked list compared to a singly linked list?

<p>Traversing the list in reverse order (C)</p> Signup and view all the answers

What is the purpose of the LinkedList l(A, 5) statement in the code snippet?

<p>To create a new linked list with the values 1, 2, 3, 4, and 5 (D)</p> Signup and view all the answers

In the given code snippet, what is the purpose of the function 'deletes'?

<p>To delete a node from a Singly Linked List at a given index (B)</p> Signup and view all the answers

What does the variable 'x = -1' indicate in the 'deletes' function?

<p>Unsuccessful deletion of the node (C)</p> Signup and view all the answers

What is the significance of 'index < 1 || index > length()' in the 'deletes' function?

<p>Checking if the index is within a valid range (C)</p> Signup and view all the answers

What operation is performed when 'index == 1' in the 'deletes' function?

<p>Deleting the first node of the linked list (C)</p> Signup and view all the answers

What is the role of 'q' in the 'deletes' function when 'index != 1'?

<p>To store the previous node before deletion (D)</p> Signup and view all the answers

What happens if 'index' exceeds the total length of the linked list in the 'deletes' function?

<p>The last node gets deleted (D)</p> Signup and view all the answers

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