# Technical Interview Questions

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Sort: Popular Date

### Sales Strat Intern at Goldman Sachs

Mar 17, 2013
 “Suppose we hire you, and you and the rest of the new interns decide to go buy a cup of coffee. Each intern purchases one cup of coffee. One of the interns suggests everyone play a game. Everyone…”

### Software Engineer at Dropbox

Feb 9, 2013
 “Given an array of integers eg [1,2,-3,1] find whether there is a sub-sequence that sums to 0 and return it (eg 1,2,-3 or 2,-3,1)    Checking every sub-sequence is O(n^2) which is too inefficient”

### Software Engineering Intern at Facebook

Feb 7, 2011
 “Implement a power function to raise a double to an int power, including negative powers.”

Jun 11, 2010
 “Write a function that divides two numbers without using the divide '/' operator.”

### Quant Research Intern at Susquehanna International Group, LLP

Mar 17, 2013
 “Suppose you have two covariance matrices A and B. Is AB also a covariance matrix? Suppose that, by plain dumb luck, we also have that AB=BA. Is AB a covariance matrix under this additional…”

### Software Development Engineer at Amazon.com

Jun 24, 2010
 “List all anagrams in a file. Assumptions: case-insensitive, a-z characters only, one word per line. For example, if the file contains dog, cat, ddd, goo, act, god -- output dog, god, act, cat”

### 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.”

Jan 24, 2010