How do I implement tree structures in programming?

How do I implement tree structures in programming?

To implement tree structures, you can start by defining a node class that contains data and references to child nodes.

Can you show me an example in Python?

Sure! Here's a simple example:

class TreeNode:
    def __init__(self, value):
        self.value = value
        self.children = []

    def add_child(self, child_node):
        self.children.append(child_node)

How do I traverse this tree?

You can use depth-first or breadth-first traversal. For depth-first, you can use recursion. Here's an example:

def depth_first_traversal(node):
    print(node.value)
    for child in node.children:
        depth_first_traversal(child)

What are some common use cases for tree structures?

Common use cases include representing hierarchical data like file systems, organization charts, and parsing expressions.