HackerRank solution for the Data Structures problem solving exercise called "Insert a Node at the Tail of a Linked List". Here, we have to complete a function that will traverse a linked list data structure, insert a node at the tail of the linked list, and then return a pointer to the head of the linked list. We will insert the node in the linked lists in C and C++ languages.
In C programming, we use the malloc function to allocate memory on the computer to store a new node. In C++, we use the "new" keyword to allocate memory and obtain a node pointer. Another example is that in the C solution's code of this HackerRank challenge, nodes are created as instances of a struct. In C++, the nodes are instances of a node class.
Every node in the linked list data structure has a pointer to the next node only, because we are only working with a singly linked list. Knowing how to insert a node at the tail of a linked list is essential to strengthen your knowledge about data structures in C and C++ for competitive programming.
All HackerRank solutions on GitHub (please leave a star): https://github.com/IsaacAsante/HackerRank
HackerRank's Insert a Node at the Tail of a Linked List coding challenge: https://www.hackerrank.com/challenges/insert-a-node-at-the-tail-of-a-linked-list/problem
