DIY: Serialize and Deserialize N-ary Tree

Problem statement

You are given an N-ary tree. You have to make the following functions:

• serialize(root): This function takes the root node of the tree and serializes it into a string.
• deserialize(data): This function takes the serialized string and converts it back into a tree.

There is no restriction on how your serialization and deserialization algorithm should work.