Why the manhole cover is round?
Software Engineer Data Interview Questions
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Find the common numbers in two text files.
Given a list of integers of at least length 7, print the average of each consecutive 7 number long subsequence (sliding window).
Given a list of integer e.g. (1,2,4,5,6,7,8...) Find a pair with a given sum.
Write the code for "moving of the robot": there is a "generator" -- each time generate 1/0, when 1 the robot will move up, when 0 will go down, write the function to make the robot move up forever.
Implementing a system for fast anagrams retrieval given a large file of words
Given a list of files, each of which contains some "require METHOD_NAME" lines, and "provide METHOD_NAME" lines. Return a working order of files to be processed.
Design twitter trending topics
In a 2D vector, all vectors were of size two. Eg: {{1,3},{2,3},{1,4}}. The vectors represent the entry and exit time of a pedestrian crossing a road. Pedestrian 1 entered at time 1 and exited at time 3 and so on.. Find the interval during which maximum number of pedestrians were crossing the road.
1. How to encrypt a set of string e.g. WAAAYYFFFFFAIIIRR to W1A3Y2F4A1I3R2 etc... And how to decrypt it back to original string (2 separate functions) 2. How to design a system so that user can check in their location thru their phone, and how to scale it when the app gets popular and millions of users are using it. How would you expand the application features when popularity grows. 3. How to design a database of Warehouse, Suppliers and Customers and they ask you to write various SQL queries to pull products sold, how many customers bought more than 30 products etc 4. A coding problem to simulate the coin game and gambler's fallacy (if they are 4 Heads in a row, gambler would bet on Tail, and vice versa).
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