Google Software Engineer Internship interview questions

Two back-to-back technical interviews with two engineers. The first round interviewer asked questions about heap, starting from a warm-up problem, then a follow up, then optimization. The second round interviewer asked about a problem regarding stack.

Two interviews, two times coding like leetcode algorithmic problems with an interviewer. But not strictly leetcode. After the interviews there is team matching and then the final offer, pretty slow process. Two interview scheduled back to back.