Problem of the day
Tip 1 : Your basics should be very clear about data structures and algorithms.
Tip 2 : Try to solve questions in a specific time frame. Also dry run your code with custom test cases, try to find the edge cases.
Apart from this try analyzing the time and space complexity of your solution.
Tip 3 : Take a look at editorials after solving the questions as it can give you a better approach to the problem.
Tip 4 : Don't neglect subjects like OOP's, DBMS and OS. Interviews ask few questions from here as well.
Tip 1 : not too short or too long
Tip 2 : scale up the basic technologies in resume