This is the collation of questions asked for Interviews mostly for SDE's. Also helpful to cover Data Structures at a strech.
Questions Link - https://bit.ly/takeUforward
Only start doing these problems if you feel you are comfortable with solving basic problems of DSA. Once you are, you can start preparing for these problems, because these problems are solely interview based.
You are welcome to contribute questions and follow up with more data structures or easier solutions.