IBM Software Engineer interview questions

The Technical Round Was So Good, The Person Is Nice, They Ask Me About My Project That Is Core Banking Solution. Then Moving Next They Ask Me About OOPs Concept In Detail, That Is Class, Object, APIE. 1) Practical Question Ask On OOPs i.e. Virtual Function 2) Palindrome Number Question (int , string) 3) Permutetion Combination for an string "abc"

Had 1 interview which was pretty straight forward. Coding questions, design questions and resume deep dive. I had 3 interviewers and they well asking questions one after the other, it was a firing round.