How does n-ary tree traversal work and what are the different strategies for traversing an n-ary tree efficiently?

N-ary tree traversal involves visiting each node in an n-ary tree in a specific order. The different strategies for efficiently traversing an n-ary tree include:

1. Preorder traversal: Visit the current node first, then recursively visit each child node in order.
2. Postorder traversal: Recursively visit each child node first, then visit the current node.
3. Level order traversal: Visit nodes level by level, starting from the root and moving down each level before moving to the next level.

These strategies help efficiently navigate through the nodes of an n-ary tree while ensuring that each node is visited exactly once.