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How do you insert a node at the end of a circular linked list?

How do you insert a node at the end of a circular linked list?

Algorithm

  • Step 1: IF PTR = NULL.
  • Step 2: SET NEW_NODE = PTR.
  • Step 3: SET PTR = PTR -> NEXT.
  • Step 4: SET NEW_NODE -> DATA = VAL.
  • Step 5: SET NEW_NODE -> NEXT = HEAD.
  • Step 6: SET TEMP = HEAD.
  • Step 7: Repeat Step 8 while TEMP -> NEXT != HEAD.
  • Step 8: SET TEMP = TEMP -> NEXT.

How do you add an element to a circular linked list?

To implement a circular singly linked list, we take an external pointer that points to the last node of the list. If we have a pointer last pointing to the last node, then last -> next will point to the first node.

How do I add a node to a circular linked list in Java?

Define another class for creating the circular linked list and it has two nodes: head and tail. It has two methods: addAtStart() and display() . addAtStart() will add the node to the beginning of the list: It first checks whether the head is null (empty list), then it will insert the node as the head.

How do you change nodes in a circular linked list?

The following approach swaps two nodes A and B by observing the PA, predecessor of A and SB, the successor of B. First, we remove A and B, then we insert A left of SB and finally B right of PA. In the special case that A is the successor of B, we restart with swapped parameters.

What is a circular linked list in data structure?

Circular Linked List is a variation of Linked list in which the first element points to the last element and the last element points to the first element. Both Singly Linked List and Doubly Linked List can be made into a circular linked list.

What are the applications of circular linked list?

Application of Circular Linked List

  • The real life application where the circular linked list is used is our Personal Computers, where multiple applications are running.
  • Another example can be Multiplayer games.
  • Circular Linked List can also be used to create Circular Queue.

What is circular linked list with diagram?

How will you explain circular linked list?

A circular linked list is a sequence of elements in which every element has a link to its next element in the sequence and the last element has a link to the first element. That means circular linked list is similar to the single linked list except that the last node points to the first node in the list.

What is circular linked list with example?

Circular linked list is a linked list where all nodes are connected to form a circle. There is no NULL at the end. A circular linked list can be a singly circular linked list or doubly circular linked list.

How do you find the starting node in a circular linked list?

Find first node of loop in a linked list

  1. If a loop is found, initialize a slow pointer to head, let fast pointer be at its position.
  2. Move both slow and fast pointers one node at a time.
  3. The point at which they meet is the start of the loop.

How to implement a circular singly linked list?

How to insert a node in a circular list?

1 Create a newNode and assign some data to its data field. 2 Traverse to N-1 position in the list, in our case since we want to insert node at 3 rd position therefore we would traverse to 3-1 = 2 nd position 3 Link the next pointer field of newNode with the node pointed by the next pointer field of current (N-1) node.

How to add a node to a linked list?

Add at the Start : Add a node the beginĀ­ning of the linked list. Its O (1). If size is 0 then make the new node as head and tail else put the at the start, change the head and do not change the tail. Add at the End : Add a node at the end of the linked list. its O (1) since we have tail reference.

How to add a head to a linked list?

Head points the start of the linked list and tail points to the last node of the linked list. Add at the Start : Add a node the beginĀ­ning of the linked list. Its O (1). If size is 0 then make the new node as head and tail else put the at the start, change the head and do not change the tail.