I applied through the career page and received an email reply to discuss my internship and final year projects.

After that, they scheduled a 45-minute, one-on-one phone interview on HackerRank CodePair.

After successfully passing this round, I had a video conference interview (2:1) with live coding on HackerRank.

They then scheduled a third round, also a video conference (2:1), again with live coding on HackerRank. A minor mistake caused my rejection.

1. Find the error in a given function.

2. Given an array and an integer m, find the average of m groups in O(n) time. Example: A[] = {1, 2, 3, 4, 5}, m = 3 Answers: avg(1, 2, 3), avg(2, 3, 4), avg(3, 4, 5)

3. Given an array and a target sum, find all pairs whose sum equals the target.

4. Given a sorted array, find the first occurrence of a given number.

5. Implement brackets matching.

6. Given two strings, find the missing string. Example: String one: "This is an example" String two: "is example" Answer: "This", "an"

7. Given pairs of ranges, merge overlapping ranges. Example: (2, 3), (5, 10), (9, 14) Answer: (2, 3), (5, 14)