The first round was of medium difficulty. It was basically focused on linked lists and arrays. The interviewer provided two coding questions on CoderPad.

In the second round, I was asked to create APIs and a data structure. I created it, but the interviewer kept adding more complexities to confuse me. He then started laughing and behaved very rudely. He was not ready to listen to my explanations or algorithms; he wanted the answer that was already established in his mind.

Python decorators were also asked.

Linked List Array Multidimensional Array Python decorators C++ compile-time array size Pointers String manipulation