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  1. Prepare
  2. Data Structures
  3. Linked Lists
  4. Insert a node at a specific position in a linked list
  5. Discussions

Insert a node at a specific position in a linked list

  • etayluz
     + 12 comments

    C solution:

    Node* InsertNth(Node *head, int data, int position)
{
    Node *newNode = (Node*)malloc(sizeof(Node));
    newNode->data = data;

    if (head == NULL) {
        return newNode;
    }

    if (position == 0) {
       newNode->next = head;
       return newNode;
    }

    Node *currentNode = head;
    while (position - 1 > 0) {
        currentNode = currentNode->next;
        position--;
    }

    newNode->next = currentNode->next;
    currentNode->next = newNode;

    return head;
 }