Data Engineering Interview Questions

56,373 data engineering interview questions shared by candidates

The abstract class question was posed differently- he said something along the lines of "Suppose you have an interface in which certain aspects of the implementation could be defined and those would carry over to classes implementing it- when do you think that would be useful?" ."
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Software Engineering Intern

Interviewed at Intuit

4.2
Dec 12, 2013

The abstract class question was posed differently- he said something along the lines of "Suppose you have an interface in which certain aspects of the implementation could be defined and those would carry over to classes implementing it- when do you think that would be useful?" ."

I was asked a puzzle .. You have 12 balls identical in size and appearance but 1 is an odd weight (could be either light or heavy). You have a set of scales (balance) which will give 3 possible readings: Left = Right, Left > Right or Left < Right (ie Left and Right have equal weight, Left is Heavier, or Left is Lighter). You have only 3 chances to weigh the balls in any combination using the scales. Determine which ball is the odd one and if it's heavier or lighter than the rest. How do you do it?
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Engineering

Interviewed at Amazon

3.5
Feb 4, 2010

I was asked a puzzle .. You have 12 balls identical in size and appearance but 1 is an odd weight (could be either light or heavy). You have a set of scales (balance) which will give 3 possible readings: Left = Right, Left > Right or Left < Right (ie Left and Right have equal weight, Left is Heavier, or Left is Lighter). You have only 3 chances to weigh the balls in any combination using the scales. Determine which ball is the odd one and if it's heavier or lighter than the rest. How do you do it?

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