(1 of 2 parts) Suppose you have the following function that is passed the head and tail pointers of a doubly linked list of integers, along with another integer, f. * bool expecto (Node ✶ h, Node *t, int f) { if (h == nullptr || t == h->prev) return false; Node *c = h; Node * r = t; while (c != r) { c = c->next; if (c != r) } r = r->prev; if (c->value return true; f) else if (c->value < f) else return expecto (h, c->prev, f); return expecto (c->next, t, f); if (c->value == f) return true;B else if (c->value < f) else return expecto (h, c->prev, f); return expecto (c->next, t, f); In brief, discuss what this function is doing and discuss its Big-O. Are there any constraints on the values in the linked list?

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