Zilogic Systems Embedded Software Engineer- Trainee interview questions

Totally 3 rounds of interviews. 1st round is apps written test. General apps,Software and hardware related questions. Simple questions and in hardware more questions from circuit based. 2nd round is online programming .totally 5 questions. We need to find logic for given problem. we should write the function alone. Its based on arrays,functions, bitwise operation. 3rd round is final hr.