Breadth-First Search (BFS)

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

References

• Wikipedia
• Tree Traversals (Inorder, Preorder and Postorder)
• BFS vs DFS
• BFS Visualization