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  1. Prepare
  2. Data Structures
  3. Linked Lists
  4. Insert a node at the head of a linked list
  5. Discussions

Insert a node at the head of a linked list

  • emhhacker
     + 0 comments

    My Java solution with o(1) time complexity and o(1) space complexity:

    static SinglyLinkedListNode insertNodeAtHead(SinglyLinkedListNode llist, int data) {
        SinglyLinkedListNode newHead = new SinglyLinkedListNode(data);
        newHead.next = llist;
        return newHead;
    }