Arvind Internet interview questions

oops concept(class, object) ,inheritance,polymorphism, encapsulation abstraction,acid properties and college time project , coding question array and string and some puzzle ,crud properties, sql query highest salary, minimum salary,third highest salary, 3 round

The interviewer asked me some standard questions on data structures and algorithms. It seemed to me that the interviewer memorized some solution and expected me to give the exact same solution. I gave him a different solution than he expected which works with expected efficiency. But he did not even show basic courtesy to even try and understand what I gave. I felt it was totally unprofessional.