(head)
return revrest
:type head: ListNode
    :rtype: ListNode
:type head: ListNode
    :rtype: ListNode
: type head : ListNode : rtype : ListNode
def reverse_list_recursive(head):
    """
    :type head: ListNode
    :rtype: ListNode
    """
    if head is None or head.next is None:
        return head
    p = head.next
    head.next = None
    revrest = reverse_list_recursive(p)
    p.next = head
    return revrest
def reverse_list_recursive ( head ) : if head is None or head . next is None : return head p = head . next head . next = None revrest = reverse_list_recursive ( p ) p . next = head return revrest