A robot can move only left and down in nXn matrix. Have to get to the bottom right corner of matrix. Write algorithm to find the maximum number paths it can take.
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Dynamic programming question. Given a list of non-overlapping (but intersecting) intervals {[0-2], [2-5], [6-10]} find the largest non-intersecting set with mamimum range. I.e in above | {[2-5], [6-10]} | > | {[0-2], [6-10]} |
Design an ID allocator which can allocate and de-allocate from a range of 1-1,000,000
you are building a website and how would you count the number of visitors for the past 5 min. Follow ups included exploring potential concurrency issues and how would you fix it.
Write a function that: given a 1 row 2^n column matrix containing integers 1 to 2^n, divide the matrix in two, and place the right half of the matrix below the left half. Repeat this process until the matrix is 2^n rows and 1 column and return the result.
Using Python, write a one-liner function to return a list containing only the unique elements of the given list. Order doesn't matter. Next, write a function to return an order-preserving list containing only the unique elements of the given list.
What is the difference between a reference and a pointer?
Given list of revision numbers and build statuses (OK or FAILED). Example : { (10001,OK ) , (10002, OK) , (10003, FAILED) , (10004,FAILED) } Find number of revision where build has failed in first time.
Providing an algorithm for combinations(n, k), not because of it's complexity, just because it took my the majority of the interview to understand that this was the problem I was solving - it was not made very clear at all.
Given a really big file with a lots of Facebook posts, find the ten most used words.
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