HR contacted me and asked me to attempt an online HackerRank question. Upon clearing it, there was a lengthy Zoom interview. I was not able to clear it because I was not ready. I felt that I could have prepared a bit more.

1. Coffee machine with different items that take different times to prepare. Only one item can be prepared at once, and the item with the shortest preparation time will be prioritized from the waiting list.

Need to find out idle time, average idle time, and preparation time.

1. You are given a stream of numbers (both positive and negative). Find the maximum possible sum from the elements such that no two selected elements are consecutive.