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Senior Software Developer Interview Questions

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Given an array of integers too large to fit into memory, identify duplicates. The memory constraint was continuously tightened as possible solutions were suggested.

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My first solution was to use a sequential search - O(1) space and O(n^2) time. My second solution was to use a bitmap index, assuming we could allocate enough words to represent the entire range of integers as sequential bits - O(n) worst case time. Other possible solutions included doing an on disk bucket sort using in place quicksort (or mergesort) as the sub-sort.

How do you count the number of cars in the car table per make of car?

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the classic questions of 2005 era

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What is your role. What did you contribute in current job. How you handle mistakes from colleagues.

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