OYO Interview Experience 2019

Round 1: Online coding on interviewbit (1 hour)

1. Given a linked list, subtract last node’s value from first and put it to first, subtract second last’s value from second and put it to second.
Input : 1 -> 4 -> 2 -> 3 -> 8 -> 1 -> 2
Output : -1 -> 3 -> -6 -> 3 -> 8 -> 1 ->2

2. Get kth row of pascal triangle.

Round 2: F2F

1. https://www.geeksforgeeks.org/find-a-tour-that-visits-all-stations/
2. OOPS design for Google Calendar.
3. Access modifiers in java

Round 3: F2F

1. Given a grid of positive & negative values. Find maximum sum of path from (0, 0) to last row. One can only go to right & down.
2. Zigzag vertical order traversal for Binary Tree.
3. Implementation of HashMap in java.

Round 4: Video Conferencing

1. Discuss projects.
2. Discuss database sharding.
3. Conflict with manager?
4. Team structure.
5. Why OYO?
6. Technical challenges in current role.
7. If a person cancel his hotel booking, OYO have to bear loss. How can minimize that loss? What problem will occur when we start taking booking fee at booking time? How to identify a person which is frequently cancelling bookings?

Round 5: F2F

1. https://www.geeksforgeeks.org/sort-an-array-of-0s-1s-and-2s/
2. https://www.geeksforgeeks.org/replace-every-element-with-the-greatest-on-right-side/ (different question of same type)
3. https://www.geeksforgeeks.org/diameter-of-a-binary-tree/
4. How indexing works in RDBMS?
5. Public & Private IPs. How a computer within a network interacts with internet?

Thank you, That’s all folks. 🙂

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