Problem
Given a linked list, detect whether it contains a cycle and return the node where the cycle begins if one exists.
Practicing as: Software Engineer interview at QuotientHi, I'll play your Quotient interviewer for the Software Engineer role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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