IBM Software Engineer interview questions

Firstly, all the basic questions on OOPs are asked(four pillars of OOPs) and I answered them correctly. Then, basic questions from DBMS were asked. The interviewer explained a situation of campus recruitment process and asked me to design the outline of the DataBase that can be used for this situation. Then, they asked about stacks and queues and asked me to implement them using OOPs. After that, they asked me about the sorting techniques that I know. They wanted me to explain heap sort and I answered them that I don't know the implementation of heap sort. So, they asked me the algorithm explanation of bubble sort, then I explained that. Later, they asked me that what data structure do I like? I said "Graphs", I also explained them of why I like graphs. They asked me few questions on Linked Lists like 1.Reverse a linked list and 2.Find middle node of a linked list After this, they asked me whether I have any questions for them. I asked few questions about the company and how they had so many patents on IBM. The interviewers politely answered my questions and I was advanced to the next round. Then in the second round(HR), they asked the following questions, 1.Suppose you have a team of 5 members and 2 of them left you due to some unavoidable reasons just before the project submission deadline. How will you respond to the situation? 2.How will you react to a situation where at the moment of delivery you came across a serious problem in your project? 3.Why do you think you are fit for this role? 4.Do you have any questions for me? Even though I was not selected for the role, it was a good experience especially with the interviewers being so friendly.