[rullopat]

You’re hired too

[belter]

Your technical interview is way too easy....

[DoctorDabadedoo]

Indeed, please write an algorithm to reverse a linked list in O(1).

[vidarh]

Assuming I can choose linked list implementation, that is trivial:

It's a doubly linked list where the head contains a pointer to the tail, and a flag that determines which pointer in the nodes is forward and which is backward.

[belter]

It's a trick question. Ask if its on Space or Time complexity ;-)