# Can linked list have multiple pointers?

## Can linked list have multiple pointers?

In a multi linked list there will be several pointers, each pointer ordering the nodes based on some criteria. The difference is, In a doubly linked list we can traverse the list in either direction, but it is ordered to form 1 list i.e. one ordering of nodes .

### Why do we pass double pointers in linked list?

In the linked list if the head pointer has to point to some other node we need to use the double pointer when it is passing to a function. So basically you would pass the pointer to a first node of the linked list to a method which for example, reverses the linked list or creates a modified list from the original list.

How many pointers are used in linked list?

There are generally three types of pointers required to implement a simple linked list: A ‘head’ pointer which is used for pointing to the start of the record in a list. A ‘tail’ pointer which is used for pointing to the last node. The key factor in the last node is that its subsequent pointer points to nothing (NULL).

Can a node point to multiple nodes?

It can have multiple links to other nodes. Common usages of link lists have single links and double links, but there is no stopping how many links you have. In fact, a tree implemented using links would ideally have more than one link from each node. .

## What is a multilevel linked list?

Multilevel Linked List is a 2D data structure that comprises several linked lists and each node in a multilevel linked list has a next and child pointer. All the elements are linked using pointers.

### How do you create a multiple linked list?

2 Answers

1. You create a pointer in main() node *head = NULL;
2. You pass its address to the function thus having a pointer to a pointer void add(int i,node** h,node** e)
3. You dereference it thus having the exact pointer outside node* head = *h;
4. You assign to the local copy of the pointer.

What is double pointer in linked list?

Double pointer may be used in linked list to pass as an argument whenever we need to make a change to the actual linked list passed through a function whose return type is void. Thus, such functions are used only to manipulate the linked list by passing the reference of its head. This is just same as pass by reference.

What is head pointer in linked list?

The beginning of the linked list is stored in a “head” pointer which points to the first node. The first node contains a pointer to the second node. The second node contains a pointer to the third node, and so on. The last node in the list has its .

## What pointers would you need to implement the stack using a linked list?

Implement a stack using singly linked list

• push() : Insert a new element into stack i.e just inserting a new element at the beginning of the linked list.
• pop() : Return top element of the Stack i.e simply deleting the first element from the linked list.
• peek(): Return the top element.

### What is multi linked list?

Definition: A multi linked list is a linked list where each node may contain pointers to more than one nodes of the linked list. Doubly linked lists are a special case of Multi-linked lists.

Can two singly linked list be combined?

The new list should be made by splicing together the nodes of the first two lists. For example if the first linked list a is 5->10->15 and the other linked list b is 2->3->20, then SortedMerge() should return a pointer to the head node of the merged list 2->3->5->10->15->20.