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  1. Prepare
  2. Data Structures
  3. Linked Lists
  4. Reverse a doubly linked list
  5. Discussions

Reverse a doubly linked list

  • kuro_ece
     + 0 comments

    reverse in place:

    DoublyLinkedListNode* reverse(DoublyLinkedListNode* llist) {
    DoublyLinkedListNode* cur = llist;
    DoublyLinkedListNode* rev = NULL;
    
    while(cur) {
        DoublyLinkedListNode* next = cur->next;
        cur->next = rev;
        rev = cur;
        cur = next;
        rev->prev = cur;
    }
    
    return rev;
}