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You are given 1000 containers of water with exactly one container containing poison. You can use pigs to test which container contains poison. The conditions are that: A pig drinking the poisoned water woudl die exactly after 1 hour and that a pig could be used for sampling multiple containers. Assume that the pig takes 0 time to drink water from any number of containers. What is the minimum number of pigs would you use to identify the poisoned container within 1 hour.
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Software Development Engineer

Interviewed at Amazon

3.5★
Mar 16, 2011

You are given 1000 containers of water with exactly one container containing poison. You can use pigs to test which container contains poison. The conditions are that: A pig drinking the poisoned water woudl die exactly after 1 hour and that a pig could be used for sampling multiple containers. Assume that the pig takes 0 time to drink water from any number of containers. What is the minimum number of pigs would you use to identify the poisoned container within 1 hour.

Given a binary tree with only upwards (parent) node references, re-construct the tree adding in child references. You are given a list of leaf nodes (sorted in left to right order). Tricks include making sure to account for extremely unbalanced trees.
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Software Engineer

Interviewed at Amazon

3.5★
Apr 27, 2011

Given a binary tree with only upwards (parent) node references, re-construct the tree adding in child references. You are given a list of leaf nodes (sorted in left to right order). Tricks include making sure to account for extremely unbalanced trees.

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