Completed all OA's before 15th December 2020.

For OA1 completed 7 out of 7 questions

for OA2,
Questions were

1. https://leetcode.com/problems/merge-sorted-array/ passed all test cases except 1
2. https://leetcode.com/problems/copy-list-with-random-pointer/ passed all test cases

Week later, got mail from recruiter that I passed the OA. And scheduled 3 rounds of interview for January last week.
Each round were 1 hr with following questions
Round 1 - 2 interviewers

• 2 LP questions
• Implement queue using stack
• Find loop in single linkedlist
• find missing element in an array
• Explain any sorting algorithm
• Time and space complexity for the above problems
• Difference similarity between list, linkedlist and array
• Implementation of Hashmap
• Difference between set, hashmap, list

Round 2 - 1 inerviewer

1. 2 LP questions
2. What are Design patterns? example and explanation?
3. Best coding practices
4. https://leetcode.com/problems/integer-to-english-words/
5. Time complexity for the above problem

Round 3 - 1 interviewer

1. 2 LP questions
2. Print matrix spirally
3. Time and space complexity for the above problem

Overall interviewers were really helpful, they will give you hint if you get stuck. It was a positive experience. 5 days later I got the offer :)

Background-
I recently completed my masters in CS. I prepared using leetcode for a month, did around 20 easy to medium questions. And also prepared using the book "Cracking the coding intervew". Both were really helpful.

Thanks