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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

  • aryankhatri9811
     + 0 comments

    Sol in C++

    SinglyLinkedListNode* insertNodeAtPosition(SinglyLinkedListNode* llist, int data, int position) { SinglyLinkedListNode* newNode = new SinglyLinkedListNode(data);

    if(position == 0){
    newNode -> next = llist;
    llist = newNode;
    return llist;
}else{
    SinglyLinkedListNode* current = llist;
    int i=0;
    while(i<position-1 && current->next!=nullptr){
        current = current->next;
        i++;
    }
    if(current->next == nullptr){
        newNode->next = nullptr;
        current->next = newNode;
    }else{
        newNode -> next = current->next;
        current -> next = newNode;
    }
    return llist;   
}

    }