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Engineering Project Coordinator Interview Questions

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45,244 engineering project coordinator interview questions shared by candidates

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?

The iPhone has a feature for when a user begins to enter a contacts name or email address a list of possible matches is built. How would you implement this in order for the search to perform quickly and change each time a user inputs a character?
avatar

Software Engineering

Interviewed at Apple

4.2★
Nov 16, 2009

The iPhone has a feature for when a user begins to enter a contacts name or email address a list of possible matches is built. How would you implement this in order for the search to perform quickly and change each time a user inputs a character?

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