![]() ![]() So first we shall visit 2 (since it is adjacent to 1), then 6 (since it is adjacent to 3) and 5, 7 (since these are adjacent to 4). Now, we shall visit all the vertices adjacent to 1, then all the vertices adjacent to 3 and then all the vertices adjacent to 4. Suppose we visit the vertices in order 1,3,4. Here, we can visit these three vertices in any order. Then we will visit all vertices adjacent to vertex 0 i.e., 1, 4, 3. We start our traversal from the vertex 0. The vertex 0 is the starting vertex in our case. Next, we pick the adjacent vertices one after another and visit their adjacent vertices and this process goes on and on until we reach the last vertex. In this technique, we first visit the vertex and then visit all the vertices adjacent to the starting vertex i.e., 0. In this tutorial, we are going to focus on Breadth First Search technique. There are two most common methods to traverse a Graph: ![]() It is the process of systematically visiting or examining (may be to update the Graph nodes) each node in a tree data structure, exactly once. In data structures, there is a popular term known as ‘Traversal’. Before jumping to actual coding lets discuss something about Graph and BFS.Īlso Read: Depth First Search (DFS) Traversal of a Graph Ī Graph G = (V, E) is a collection of sets V and E where V is a collection of vertices and E is a collection of edges. ![]() In this tutorial we will discuss about Breadth First Search or BFS program in C with algorithm and an example. ![]()
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