Senior Interview Questions

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Given an array of integers A[1...n], compute the array B[1...n] such that B[k] is the product of all the elements of A, except A[k]. Part ii) Try to do it without division (some mobile devices don't have division). Was asked to write code for part ii.
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Software Engineer

Interviewed at Amazon

3.5
Sep 29, 2011

Given an array of integers A[1...n], compute the array B[1...n] such that B[k] is the product of all the elements of A, except A[k]. Part ii) Try to do it without division (some mobile devices don't have division). Was asked to write code for part ii.

There is a body of water that starts with 1 square unit, and doubles in size every day (2 units after 2 days, 4 units after 4 days). It takes 100 days to fill up. How many days would it take to fill if you started with 2 square units?
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Senior Systems Test Engineer

Interviewed at Qualcomm

3.8
Jun 7, 2010

There is a body of water that starts with 1 square unit, and doubles in size every day (2 units after 2 days, 4 units after 4 days). It takes 100 days to fill up. How many days would it take to fill if you started with 2 square units?

Given a 1TB file of serialized 4 byte integers, and 2GB of ram, sort the integers into a resulting 1TB file. My interviewer was very collaborative in entertaining various solution ideas until we came up with a combo that would work performantly and reduce the number of passes over the 1TB file and intermediate files.
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Senior Software Engineer

Interviewed at Meta

3.6
Oct 14, 2010

Given a 1TB file of serialized 4 byte integers, and 2GB of ram, sort the integers into a resulting 1TB file. My interviewer was very collaborative in entertaining various solution ideas until we came up with a combo that would work performantly and reduce the number of passes over the 1TB file and intermediate files.

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