Serialize and Deserialize N-ary Tree (hard)

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Problem Statement

Serialization is the process of converting a data structure or an object into a sequence of bits. This conversion allows the data to be stored in a file, transferred over a network, or saved in memory, with the ability to reconstruct the data later.

Design an algorithm to serialize and deserialize an N-ary tree.

An N-ary tree is a rooted tree where each node can have up to N children. The serialize() method should transform an N-ary tree into a string format and then the deserialize() method should be able to convert this string back to the original tree structure.

There is no restriction on how to perform serialization or deserialization, as long as the process accurately preserves the tree structure.

Examples

Example 1:

Input: root = [1,null,2,3,4,null,5,6]

Expected Output: [1,null,2,3,4,null,5,6]
Explanation: We serialize the deserialize the given N-ary tree.

Example 2:

Input: root = [10,null,20,30,null,40,50,60]

Expected Output: [10,null,20,30,null,40,50,60]
Explanation: We serialize the deserialize the given N-ary tree.

Example 3:

Input: root = [100,null,200,300,400,500,null,600,700,null,800]

Expected Output: [100,null,200,300,400,500,null,600,700,null,800]

Constraints:

The number of nodes in the tree is in the range [0, 10<sup>4</sup>].
0 <= Node.val <= 10<sup>4</sup>
The height of the n-ary tree is less than or equal to 1000
Do not use class member/global/static variables to store states. Your encode and decode algorithms should be stateless.

Try it yourself

Try solving this question here:

Python3

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