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8/1/2009 10:49 PM |
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1. Please describe a data structure that accomplishes the functions INSERT and FIND-MEDIAN in the best possible asymptotic time.
2. Given a circularly sorted array, describe the fastest way to locate the largest element.
3. Given a binary search tree and an integer k, describe the most efficient way to locate two nodes of the tree that sum to k.
4. Given an arbitrarily connected graph, explain how to ascertain the reachability of a given node.
5. If you have one billion numbers and one hundred computers, what is the best way to locate the median of the numbers?
6. Describe an API for a cache, with all of the associated function signatures. Provide pseudocode for the simple one.
7. Implement a special
type of integer iterator. It will be a wrapper over a regular integer
iterator, except that this iterator will only iterate over negative
numbers. Show how you’d write the next() and hasNext() functions to
work with the next negative integer instead of just the next integer.
8. You are making an AI to play Tic-Tac-To. Make
a function that takes a board position as an input and returns a good
position to play. Describe how you’d represent the board, and how you’d
determine where to play next.
9. You are given 1001 numbers in an array. There are 1000 unique
numbers and 1 duplicate. How do you locate the duplicate as quickly as
possible?
10. Say you are implementing exponentiation for a certain processor. How would you minimize the number of multiplications required for this operation?.