Given two doubly linked lists. The task is to find the total number of common nodes in both the doubly linked list.
Input : list 1 = 15 <=> 16 <=> 10 <=> 9 <=> 6 <=> 7 <=> 17 list 2 = 15 <=> 16 <=> 45 <=> 9 <=> 6 Output : Number of common nodes: 4 Input : list 1 = 18 <=> 30 <=> 92 <=> 46 <=> 72 <=> 1 list 2 = 12 <=> 32 <=> 45 <=> 9 <=> 6 <=> 30 Output : Number of common nodes: 1
Approach: Traverse both lists till the end of the list using two nested loops. For every node in list 1 check if it matches with any node in list 2. If yes then increment the count of common nodes. Finally, print the count.
Below is the implementation of the above approach:
Number of common nodes:4
- Construct a Maximum Sum Linked List out of two Sorted Linked Lists having some Common nodes
- Find common elements in three linked lists
- Find the common nodes in two singly linked list
- Hashtables Chaining with Doubly Linked Lists
- Rotate Doubly linked list by N nodes
- Delete all the even nodes from a Doubly Linked List
- First common element in two linked lists
- Delete all Prime Nodes from a Doubly Linked List
- Delete all the nodes from the doubly linked list that are greater than a given value
- Delete all nodes from the doubly linked list which are divisible by K
- Delete all the nodes from a doubly linked list that are smaller than a given value
- Sum of all nodes in a doubly linked list divisible by a given number K
- Product of all prime nodes in a Doubly Linked List
- Longest common suffix of two linked lists
- Product of all nodes in a doubly linked list divisible by a given number K
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