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LeetCode 297 · Solution & editorial
Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection link to be reconstructed later in the same or another computer environment.
Serialize and Deserialize Binary Tree is a Tree Traversal Patterns (DFS & BFS) problem, in the Serialization and Deserialization subpattern. The pattern covers preorder, inorder, level order traversal, LCA, and serialization
Learn to serialize and deserialize binary trees. Convert trees to strings and reconstruct them.
The reference solution runs in O(n) time and O(n) space.
Serialize and Deserialize Binary Tree has been reported in interviews at Facebook, Microsoft, Amazon, LinkedIn, Uber, Bloomberg, eBay, Quora.
The full editorial is part of Pro
It explains the core insight, the complexity analysis and the common mistakes, with a worked solution.
Serialize and Deserialize Binary Tree is a Tree Traversal Patterns (DFS & BFS) problem, in the Serialization and Deserialization subpattern. Once the approach above makes sense, write it yourself and then work through the neighbouring problems that reuse it.