hardBlind 75
Serialize and Deserialize Binary Tree
Convert a binary tree to a string.
Serialize and Deserialize forces you to pick a format that survives a round trip, and pre-order with null markers is the cleanest pick. The deserialize side is the real test: a shared cursor over your tokens rebuilds the tree in one pass. Get this and you understand why null placeholders are not optional, they are the structure.
TreesDesignBFS / DFS
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1Serialize and Deserialize Binary Treehard
Based onLeetCode