Google conducts 4-6 onsite interviews, including lunch "interviews" where it's just interaction with a Googler. Each round roughly takes 45 minutes to one hour. This will be a whiteboard round, and the majority of the Google interview consists of coding. Now, here comes the role of DSA and Core CS subjects to check your coding, problem-solving skills, and command over computer science fundamentals. Firstly, you will go through the coding interview round, and then the system design round (based on experience). The difficulty level of the questions is based on the level you are applying for at Google.

Q. Given an array of integers and a target value, describe an algorithm to find the indices of the two numbers that add up to the target.