Serialize and Deserialize Binary Tree

AAAIn this video, we explore the process of serializing and deserializing a binary tree, which allows us to store and later restore a tree structure. Serialization is the process of converting the tree into an array, while deserialization reconstructs the tree from that array. We cover two approaches for serialization: using preorder traversal and using level order traversal. Both methods ensure that the tree structure is preserved, with the latter being more suitable for complete trees. We also explain the time and space complexities of each approach.

The first approach uses preorder traversal to serialize the tree, where each node’s value is recorded, and a marker (-1) is used for null nodes. The second approach employs level order traversal, which processes nodes level by level, making it suitable for complete binary trees. The deserialization process for both methods involves reconstructing the tree from the array, creating nodes where necessary, and linking them back together. Finally, we discuss potential optimizations for more efficient storage, such as using a single bit for leaf nodes to minimize markers.

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