Recently Amazon visited our campus and take three rounds for final selection.
First Round: 20 MCQs, 2 Coding questions. Platform – HackerRank.
2.A question involving optimization using modified binary search(I do not remember the entire question).
A total of 10 students were selected after this round. The aptitude were simple but coding questions were time-consuming.
The interviewer asked me three questions one after another.
The interviewer asked me the approach only.
The interviewer asked me directly to code.
The interviewer asked me the approach but did not tell me to code.
It was an easy round and 5 students were selected for Third round.
1.Write a program to remove the whitespaces from a given string.
First i told him in o(n) time complexity and o(n) space complexity approach but he wanted o(n) time complexity with constant space complexity. I was unable to do it so he asked me second question.
2.Write a program to find the element which is common in all the rows in a two-dimensional array. I told him using binary search but he wanted more optimized approach but i was unable to do so.
I did not get selected but Overall it was a good interview experience.
I want to thank geeksforgeeks for such a good and amazing solutions to the back-breaking problems which helped me in the interview .
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