Google Interview Question for Java Developers

Country: United States

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O(n) solution :
store emp-> manager (direct manager) mapping in a hashmap and use it in all the APIs. Off course, take care of cycles and conflicts as mentioned above

O(1) solution : use something like disjoints sets. We still store the emp-> manager mapping in a hashmap but the manager will be super manager (like a root of the tree instread of direct manager) . With this approach, we can query, set and take of conflicts in O(1).

- Akshay December 01, 2017 | Flag Reply

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