Software Engineer Data Interview Questions

438,665 software engineer data interview questions shared by candidates

In python code, given a json object with nested objects, write a function that flattens all the objects to a single key value dictionary. Do not use the lib that actually performs this function. { a:{b:c,d:e} } becomes {a_b:c, a_d:e} ( not, a:"b:c,d:e" }
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Data Engineer

Interviewed at Amazon

3.5
Apr 29, 2020

In python code, given a json object with nested objects, write a function that flattens all the objects to a single key value dictionary. Do not use the lib that actually performs this function. { a:{b:c,d:e} } becomes {a_b:c, a_d:e} ( not, a:"b:c,d:e" }

My 30 min coding question was related to tree where all nodes were managers each node has a value which was the number of months they worked.We have to find the maximum tenure which is I remember can be calculated using the average of its child nodes.
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Software Development Engineer

Interviewed at Amazon

3.5
Jan 25, 2017

My 30 min coding question was related to tree where all nodes were managers each node has a value which was the number of months they worked.We have to find the maximum tenure which is I remember can be calculated using the average of its child nodes.

(following the previous one) You got only TWO baby bottle sample. You would like to know the max height you can drop it without breaking the bottle. Let set the unit as 1 foot. And the highest height you can reach is at N feet. So how would you find the (max) safe height? (This is the one I think is kind of brain-teaser one.)
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Software Development Engineer Intern

Interviewed at Amazon

3.5
Jan 28, 2012

(following the previous one) You got only TWO baby bottle sample. You would like to know the max height you can drop it without breaking the bottle. Let set the unit as 1 foot. And the highest height you can reach is at N feet. So how would you find the (max) safe height? (This is the one I think is kind of brain-teaser one.)

Puzzle: There are 25 horses and 5 lanes for conducting a race among them. In a minimum of how many races, would be able to find out the 3 fastest horses among them? Assumption: Speed of horses are consistent enough across races.
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Software Development Engineer

Interviewed at Scantron

2.8
Feb 2, 2012

Puzzle: There are 25 horses and 5 lanes for conducting a race among them. In a minimum of how many races, would be able to find out the 3 fastest horses among them? Assumption: Speed of horses are consistent enough across races.

Question Description: Write a function that, given a list of integers (both positive and negative) returns the sum of the contiguous subsequence with maximum sum. Thus, given the sequence (1, 2, -4, 1, 3, -2, 3, -1) it should return 5.
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Software Engineer Intern

Interviewed at LinkedIn

3.8
Dec 4, 2014

Question Description: Write a function that, given a list of integers (both positive and negative) returns the sum of the contiguous subsequence with maximum sum. Thus, given the sequence (1, 2, -4, 1, 3, -2, 3, -1) it should return 5.

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