Tip 1 : Do practice a lot of DP problems and pay more focus on Data Structure and algorithms related problems.
Tip 2 : Don’t panic in any situation during interview and have confidence on yourself. 
Tip 3 : I prepare for my interview through the interview preparation course of Coding Ninjas and it was too good. You will get all the concepts that are asked in an interview there.
Tip 4 : Also, pay more focus on Data structures and algorithms as they are most important part of the interview.

Tip 1 : Resume doesn't matter as much if you have the right skills, at least for On-campus placements as most companies have shortlisting criteria based on CGPA, not on the resume. But keep your resume simple and readable.
Tip 2 : Do mention 2-3 good projects and your previous internship experiences as it will give a good impression to the interviewer and increases your chances of selection.