This. + 100. If it is any comfort, it isn't personal. Everyone in the system is just reacting to their incentives. Just learn datastructures and algorithms an

This. + 100. If it is any comfort, it isn't personal. Everyone in the system is just reacting to their incentives. Just learn datastructures and algorithms and whatever hackerrank tricks you need. This is much easier for a student than for someone who has been in the workforce a few years, and has forgotten CS fundamentals.