Serialize (flatten) and de-serialize a binary tree. First describe the approach, then write the code.

Question

Anonimo · Accepted Answer

http://www.leetcode.com/2010/09/serializationdeserialization-of-binary.html

Sandesh · Answer

For BST
http://www.leetcode.com/2010/09/saving-binary-search-tree-to-file.html

Anonimo · Answer

I know that some people didn't get to the de-serialization code...so it might be a bit long.
The question itself is pretty basic so the objective should be to provide a clear explanation and code.
Interviewer seemed happy that I didn't jump straight to the solution, but instead inquired about any system restrictions, requirements etc.

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