For experienced profile
General discussion on career so far.
- Difference between process and thread
- Given a long string and a small pattern, find whether any permutation of the pattern in present in the string (Working Code and a dry run expected, not pseudocode). Find the space and time complexity.
- Toughest technical challenge faced in career so far
- Given an array of integers, write pseudocode to find the smallest non-negative integer not present in the array (can use additional space)
- Consider a n*n grid. Suppose each cell in the grid has a value assigned. We can go from each cell in row i to a diagonally higher cell in row i+1 only [i.e from cell(i,j) to cell(i+1, j-1) and cell(i+1, j+1) only] . Write a pseudocode to find a path from bottom row to top row such that the maximum value is obtained.
Similar Question : GeeksforGeeks Link
- Suppose you have a binary tree. What is the best way to serialize and send this information such that the receiver can construct the tree correctly. Code not asked.
Solution : GeeksforGeeks Link
- Given a n*n grid where most cells are cubicles and m cells (m << n^2) are pantries. There can be walls between two cubicles through which we cannot have a path. Given the locations of walls and pantries, for a given cubicle find the nearest pantry. Working code expected.
- Interviewer interrupted purposefully while coding Q2 and asked 2 rapid questions
- time complexity to find 10th largest number in a heap
- time complexity to find 10th largest number in an array
Open ended questions:
- Consider twitter. The requirement is to show the top 10 trending hashtags at a given time. How will you analyze/store the twitter feed to show this data.
- Design an elevator system for a building where number of elevators can be increased later.
Hiring manager round:
- Write a C function that takes a string and delimiter as input, splits the string based on the delimiter and returns a list of resulting sub strings.
- OS question – Suppose the current program running has an infinite loop, can you run another program.
Overall experience : Very quick process. The interview took place in their office and was finished in around 5 hours.
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