Amazon Development Centre India SDE Intern Interview Questions and Answers

I was asked to do a string based hard level question. Interviewerr asked me how the code worked and the logic which i explained step by step.

2 hours mcqs from all cse related topics + 1 coding question

3 coding questions easy level

Q1. I do not remember
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1 hour long test, 1 easy and 1 medium leetcode problem + some apti questions.

Q1. Asked 1 codding question (Medium) * Next permutation of a number. Number was a time stamp (eg 11:55 PM)
Ans. 
Find the next permutation of a given timestamp in HH:MM AM/PM format.
• Convert the timestamp to a 24-hour format for easier manipulation.

• Identify the rightmost pair where the earlier digit is smaller than the later one.

• Swap this digit with the smallest larger digit to its right.

• Reverse the digits to the right of the swapped position to get the next permutation.

• Example: For '11:55 PM', the next permutation is '12:00 AM'.
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Q1. 3 medium leetcode questions from graphs, queue and dp.
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2 coding question level easy-medium leetcode

Q1. 2 coding question leetcode
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Q2. Dp graph trees stack queue
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Q1. 2 Coding question leetcode easy medium
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Easy lc or medium lc quest

Q1. Coding round only was
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It was mcqs with one coding question

It consisted of 2 medium coding ques

Q1. It was a binary tree medium level leetcode ques
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Q2. It was majority element ques from leetcode
Ans. 
The majority element in an array appears more than n/2 times. We can find it using various algorithms.
• Use Boyer-Moore Voting Algorithm for O(n) time and O(1) space complexity.

• Example: In [3, 2, 3], the majority element is 3.

• Another method is using a hash map to count occurrences.

• Example: In [1, 1, 2, 2, 2], the majority element is 2.
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It was a 2 hour test having 2 coding questions . Difficulty was easy and medium.

Q1. Two questions were asked . To make a BST from array elements . Snakes and ladder. Besides this interviewer also asked about my projects and basic introduction.
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Don;t remember the leetcode question, was medium

Don't remember the leetcode qyuestion, was medium, had a behavior component, remember the Amazon principles