Sigmoid Java Backend Engineer interview questions

I got the opportunity via Naukri, they rescheduled 3 times and third time someone showed up and that too 5 mins late. started with introduction and then he asked to print the bottom view of a BST but he himself wasn't clear with the test case like he took 35 mins to explain the problem itself and I said I'm not clear with the problem he asked me to find the cycle in the linked list in last 10mins I gave an approach but I knew it wasn't correct but I didn't care as I already fed up with this guy and I left the call asking him to wind up