Insertion in Sorted Order: Recursive Approach Quiz

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Which method correctly destructs a linked list using recursion?

delete head; head = head -> next;

destroy(head) { delete head; head = head -> next; }

destroy(head);

destroy(n) { destroy(n->next); delete n; } (correct)

What is the purpose of the 'destroy' function mentioned in the text?

To create a new linked list

To recursively destroy the linked list (correct)

To remove duplicates from the linked list

To add a node to the linked list

In the context of the text, what should be the base case for the 'destroy' function?

n != NULL

n == 0

n != 0

n == NULL (correct)

What problem is likely to occur if memory is accessed after it has been freed?

Segmentation fault Signup and view all the answers

How does the 'destroy' function ensure proper removal of nodes in a linked list?

By deleting nodes in reverse order Signup and view all the answers

What is the purpose of the 'addSorted' function in the given code snippet?

To add a new node with data in sorted order within a linked list Signup and view all the answers

In the context of the provided code, what does 'curr_head->next = addSorted(data, curr_head->next)' achieve?

It inserts a new node with 'data' in sorted order after the current 'curr_head' Signup and view all the answers

What is the role of the 'Node' class in the 'LinkedList' class declaration?

To represent individual nodes containing data and pointing to the next node Signup and view all the answers

What does the recursive function 'addSorted' return when 'curr == NULL'?

A new node with 'data' as its content Signup and view all the answers

How is the connection between two parts of a linked list achieved in the provided code snippet?

By setting the 'next' pointer of one node to point to another node Signup and view all the answers

According to the pointer to a pointer approach, what is the criteria for updating 'current' while adding a node to a sorted linked list?

(*current) is not NULL and (*current)->data < dataToAdd Signup and view all the answers

In the recursive approach for inserting a node in sorted order, if 'curr_head' points to the head of the list, where would a new node belong?

It should be inserted at the beginning of the list Signup and view all the answers

What does setting *current to a new node accomplish in the pointer to a pointer approach for adding a node to a sorted linked list?

Moves the current pointer to the newly added node Signup and view all the answers

In the context of adding a node to a sorted linked list, what does (*current)->data represent?

The data value of the current node Signup and view all the answers

When would a new box with data 8 and next pointing to *current be created in the insertion process for a sorted linked list?

*current is at the end of the list Signup and view all the answers

What action signifies reaching the end of the list when adding a node using a pointer to a pointer approach?

*current points to NULL Signup and view all the answers

What is the main advantage of using a set while iterating through a linked list?

Prevents duplicates from being added to the linked list Signup and view all the answers

How does the complexity of adding an element to the front of a LinkedList compare with an array?

LinkedList has O(1) complexity while array has O(n) complexity for adding to the front Signup and view all the answers

What data structure can be used to implement a set and achieve amortized O(1) complexity for set containment operation?

Hash Table Signup and view all the answers

Why does LinkedList trade the ability to easily access a particular index with other operations?

To facilitate efficient removal of elements from any position Signup and view all the answers

When might a LinkedList exhibit O(n) complexity for certain operations?

When using a doubly linked list with a tail pointer Signup and view all the answers

What is the key advice given regarding dealing with linked list problems?

Draw pictures to aid in problem-solving Signup and view all the answers

What operation do we need to perform to add a node to the back of a linked list?

Create a new node with the data, set its 'next' to NULL, and update the last node's 'next' pointer Signup and view all the answers

In removing a node from the front of a linked list, what is an additional step required if not using a garbage-collected language like Java?

Store the head in a temporary pointer before changing it Signup and view all the answers

What does setting 'tail->next = new_node' achieve in a linked list?

Adds a new node after the current last node Signup and view all the answers

When removing a node from the back of a linked list, what is the expected time complexity if no tail pointer is available?

O(n) Signup and view all the answers

What is the main advantage of having a tail pointer in a linked list when adding nodes?

It allows for constant time complexity in adding nodes to both the front and back Signup and view all the answers

In a linked list, what does 'tail->next = NULL' signify?

The end of the linked list Signup and view all the answers

What is required when deleting a node from a linked list that was allocated dynamically?

Freeing memory allocated for the deleted node Signup and view all the answers

'temp' pointers are often used when:

Storing temporary references during pointer manipulation Signup and view all the answers

In which case do we need to update both 'tail' and 'head' pointers when adding nodes?

When inserting at any position other than front or back Signup and view all the answers

What is a potential disadvantage of using 'tail' pointers in linked lists?

Higher memory consumption when deleting nodes Signup and view all the answers