Panda Guru LogoPanda
Guru

Coinbase IC4 | India | Offer

Round 1 - Logical Reasoning OA

Questions: Basic Math questions and image pattern recognition questions.

Candidate's Approach

No approach provided.

Interviewer's Feedback

No feedback provided.


Round 2 - Code Signal OA

Questions: Key Value Store implementation which can have 2 keys. There were 4 levels. It’s somewhat similar to the Timemap question on Leetcode but you will have 2 keys here.
Timemap Question on Leetcode

Example:

key1, sub_key1, timestamp = val1 key1, sub_key2, timestamp = val2

Questions were like:

Candidate's Approach

No approach provided.

Interviewer's Feedback

No feedback provided.


Round 3 - Foundational Interview

Questions: General Behavioral Round questions.

Candidate's Approach

No approach provided.

Interviewer's Feedback

No feedback provided.


Round 4 - Tech Execution Interview

Questions: Level 1:
Write an alternate iterator for a list of lists. Similar to ZigZag Iterator on Leetcode but you can have not just 2 but 'n' lists within the list;
ZigZag Iterator on Leetcode

Example:

lists = [[0, 1, 2], [], [3, 4], [5]] output should be 0, 3, 5, 1, 4, 2

Level 2:
Write a range iterator. Should support negative step as well.
Example:

start = 0 end = 10 step = 2 output should be [0, 2, 4, 6, 8, 10]

Level 3:
Write a basic list iterator.
Example:

list = [0, 1, 2, 3, 4, 5] output should be 0, 1, 2, 3, 4, 5

Level 4:
Modify the class written in level 1 to take a list of iterator objects instead of lists and print the numbers in alternate fashion. The iterators list can contain both range iterator and list iterator.

Candidate's Approach

No approach provided.

Interviewer's Feedback

No feedback provided.


Round 5 - Domain Interview

Questions: You will be given a list of transactions. You need to write a generic search API to filter on a combination of specific fields and values.
Example:

transactions = [ {id: 1, time: 1, userId: 1, amount: 10}, {id: 2, time: 2, userId: 3, amount: 10}, {id: 3, time: 3, userId: 4, amount: 11}, {id: 4, time: 4, userId: 2, amount: 12}, ]

Filters should support operations like "=", ">", "<" etc. The question is open-ended. You need to decide how the input should look like.

Follow up:

Candidate's Approach

No approach provided.

Interviewer's Feedback

The interviewers were really nice. They were helping me whenever I got stuck. The recruiter too was good. He frequently gave me updates and feedback.