Depends on how long you've been in a position, and if you've had time to practice. 5 years out of college, worked in a single place all those years, without ev

Depends on how long you've been in a position, and if you've had time to practice. 5 years out of college, worked in a single place all those years, without ever touching data structures or algorithms under the hood? Yes, I can absolutely see even experienced programmers stumble on relatively "easy" questions. But that's just the gatekeeper to get them inside the door. You could be a good engineer without knowing how to find the optimal solution to some niche problem, on the spot.