# Breadth-first search (BFS) is an algorithm for traversing a tree or graph data structure. It starts at the tree root (or some arbitrary node of a graph) and explores the neighbor nodes first, before moving to the next level neighbors.

Here is an example of how you might implement breadth-first search (BFS) on a tree in Python:

class Node:
def __init__(self, value, left=None, right=None):
self.value = value
self.left = left
self.right = right

if root is None:
return
queue = [root]
while queue:
node = queue.pop(0)
print(node.value)
if node.left is not None:
queue.append(node.left)
if node.right is not None:
queue.append(node.right)

root = Node(1, Node(2, Node(4), Node(5)), Node(3, Node(6), Node(7)))
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