SAP Developer Senior interview questions

The interview process was very poorly arranged with HR continuously changing scheduled interview dates. Some of the panel discussions was good, but one particular person was very arrogant with not much in depth knowledge but slyly smiling more to prove his technical superiority. After wasting one full day at their office, no more communication from them even courtesy rejection letter was not sent.

First round is technical where the questions will be based on coding puzzle. Algorithm design. Second round is manager round - you will be asked to do db/class design for the problem , problem solving skills. HR Round - What is your expected salary? Justification