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Technical Interview Questions

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Technical Interview Questions

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13 cubed

6 Answers

What are the first 2 integers that, when added together, equal 10 in a "very large" array of unsigned integers?

6 Answers

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 condition?

12 Answers

find 3 elements in an array that sum to 0.

6 Answers

Given a series of words written using a scrambled alphabet, figure out what order the letters of the alphabet are in.

7 Answers

Asked to implement a function that takes an integer and returns whether or not the number had an odd or even number of 1 bits.

6 Answers

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

9 Answers

What is the output? int n = 1; puts(((char*)&n)[0]==1?"Y":"N");

6 Answers

Given a stream of integers of unknown (possibly large) length, how would you pick one at random? Now prove its random.

6 Answers

Given a set of people, one of them is a celebrity. You have a 2D array which describes which people know each other, that is [N, M] is true if N knows M. The celebrity will not know anyone (except them self) and everyone will know the celebrity. Find an order N algorithm to find the celebrity.

5 Answers
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