449. Serialize and Deserialize BST LeetCode Solution | Easy Approach

Minimum Cost to Merge Stones

Serialize and Deserialize BST Serialization is 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.

Design an algorithm to serialize and deserialize a binary search tree. There is no restriction on how your serialization/deserialization algorithm should work. You need to ensure that a binary search tree can be serialized to a string, and this string can be deserialized to the original tree structure.

The encoded string should be as compact as possible.

Example 1:

Input: root = [2,1,3]
Output: [2,1,3]

Example 2:

Input: root = []
Output: []


  • The number of nodes in the tree is in the range [0, 104].
  • 0 <= Node.val <= 104
  • The input tree is guaranteed to be a binary search tree.

Serialize and Deserialize BST Solutions

Time: O(n)
Space: O(n)


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