insert-a-node-at-the-head-of-a-linked-list.cc

// https://www.hackerrank.com/challenges/insert-a-node-at-the-head-of-a-linked-list
Node* Insert(Node *head,int data) {
  Node* newNode = new Node;
  newNode->data = data;
  newNode->next = head;
  return newNode;
}