MISSING VALUE Interview Questions

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1. Give you a data structure Seq class Sqe { int value; Seq nex; } and give you two Seq object seq., seq., compare two objects, return true if there is only one difference or no difference, false if more than two differences. 2. Giving a array which has zero and no-zero elements, move all zero elements to the end and no-zero elements to the begin.
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Senior Software Engineer

Interviewed at Meta

3.6
Mar 4, 2015

1. Give you a data structure Seq class Sqe { int value; Seq nex; } and give you two Seq object seq., seq., compare two objects, return true if there is only one difference or no difference, false if more than two differences. 2. Giving a array which has zero and no-zero elements, move all zero elements to the end and no-zero elements to the begin.

Lets say the population on Facebook clicks ads with a click-through-rate of P. We select a sample of size N and examine the sample's conversion rate, denoted by hat{P}, what is the minimum sample size N such that Probability( ABS(hat{P} - P) < DELTA ) = 95%. In other words (this is my translation), find the minimum sample size N such that our sample estimate hat{P} is within DELTA of the true click through rate P, with 95% confidence.
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Data Scientist, Analytics

Interviewed at Meta

3.6
Mar 6, 2015

Lets say the population on Facebook clicks ads with a click-through-rate of P. We select a sample of size N and examine the sample's conversion rate, denoted by hat{P}, what is the minimum sample size N such that Probability( ABS(hat{P} - P) < DELTA ) = 95%. In other words (this is my translation), find the minimum sample size N such that our sample estimate hat{P} is within DELTA of the true click through rate P, with 95% confidence.

Given a string 12345 and a alphabet to number mapping like a =1, b =2.., y=25, z=26 write a code to find number of possible alphabet strings from the given string. E.x. string 12345 has possible alphabet strings as {lcde,awde, abcde}.
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Software Engineer

Interviewed at Meta

3.6
Oct 4, 2015

Given a string 12345 and a alphabet to number mapping like a =1, b =2.., y=25, z=26 write a code to find number of possible alphabet strings from the given string. E.x. string 12345 has possible alphabet strings as {lcde,awde, abcde}.

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