# Engineer Intern Interview Questions

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### Software Engineer Intern at Goldman Sachs

Jul 28, 2009
 “Suppose you had eight identical balls. One of them is slightly heavier and you are given a balance scale . What's the fewest number of times you have to use the scale to find the heavier ball?”

### Project Engineering Intern at Disney Parks & Resorts

Oct 29, 2011
 “How many different ways can you get water from a lake at the foot of a mountain, up to the top of the mountain?”

### Software Engineering Intern at Facebook

Feb 7, 2011
 “Implement a power function to raise a double to an int power, including negative powers.”
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### Software Development Engineer Intern at Microsoft

Aug 13, 2013
 “Determine if an array from 1..n has a duplicate in constant time and space.”

### Software Development Engineer Intern at Amazon.com

Feb 15, 2012
 “To find and return the common node of two linked lists merged into a 'Y' shape.”

### Software Engineer Intern at Facebook

Oct 1, 2013
 “Given two strings representing integer numbers ("123" , "30") return a string representing the sum of the two numbers ("153")”

### Software Engineer Intern at Facebook

Sep 21, 2011
 “Generate a new array from an array of numbers. Start from the beginning. Put the number of some number first, and then that number.For example, from array 1, 1, 2, 3, 3, 1You should get…”

### Software Engineering Summer Intern at Facebook

Mar 30, 2010
 “25 racehorses, no stopwatch. 5 tracks. Figure out the top three fastest horses in the fewest number of races.”

### Software Engineering Intern at Google

Oct 14, 2011
 “how would you find the shortest path between two nodes in a social network?”

### Software Development Engineering Intern at Amazon.com

Jun 23, 2012
 “You are given an array with n positive integers where all values in the array are repeated except for one. Return the one that is not repeated.”
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