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Amazon Interview Experience | Set 161 (Off Campus for SDE-1, Bangalore)

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  • Difficulty Level : Hard
  • Last Updated : 27 Jun, 2019
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Off campus- Delhi drive (SDE-1 Bangalore)

1st round: f2f
Tell me about yourself.

Most challenging task.

Extract Leaves of a Binary Tree in a Doubly Linked List

Parenthesis Checker
Small modification in it. Parenthesis pairs are given in a separate list. You have to optimize the problem by suggesting the method you will need to store the pairs.

2nd round: Hiring manager
What is the angle between hour and minute hand at 12:15. I said 90’ but corrected myself immediately.

So he told me the importance that for huge no of clients this small mistake can create a blunder.

He asked me a scenario where I faced this thing and thereby improved the time complexity.

Lot of behavioural questions like conflicts with manager, team collaboration etc.

3rd round: f2f
Level order traversal in spiral form

Find 2 missing numbers in an array of integers with two missing values

He asked me if have heard of nut and bolt problem.

I didn’t so he moved to next question.

Given an array. Find the maximum number of groups of size of 2 or 3 that can be formed such that sum of the numbers in group is divisible by 3. No number can be reused.

4rd round: Bar raiser
Convert an integer to its roman. He asked me to consider cases with integers containing 4 and 9. I didn’t understand properly.

He asked me if I I did anything extraordinary apart from my daily work in the office and what challenges I faced.

Largest subarray with equal number of 0s and 1s
He did not accept this solution and asked me to optimize. This round didn’t go well, so I was not selected.

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