# Breadth First Search Algorithm using C STL

Breadth First Search (BFS) Algorithm. . Note: Vertex 4 is adjacent to vertices 1 and 3, but it has already been visited so weve ignored. This is what being done in the program below. . Here, I give you the code for the Breadth First Search Algorithm using C STL. So we will traverse on vertex. The basic input differs from the code in our initial discussion. In this tutorial we will discuss about. 0 represents no path. 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. The disadvantage of BFS is it requires more memory compare. Breadth, first, search or, bFS program in, c with algorithm and an example. Vertex 5 does not have any adjacent vertices. So, essentially this is the Breadth First Search algorithm designed for my code.

## C programs for the implementation of Breadth First Search

Undirected Graph, in data structures, there is a popular term known as Traversal. Not all nodes are reachable break; view raw bfs. The algorithm can also be used for just Tree/Graph traversal, without actually searching for a value. Adjacency List using C STL.

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The vertex 0 is the starting vertex in our case. Vertices 5 and 8 are adjacent to vertex. BFS search starts from root node then traverses into next level of graph or tree, if item found it stops other wise it continues with other nodes in the same level before moving on to the next level. C hosted with by GitHub Sample Output BFS in C The graphs matrix representation is used as input to our program. Search in Graph:, eva, brian, emplyee not found, thanks for visiting! Suppose we visit the vertices in order 1,3,4. But the reason I put the whole code, is that the graph I am using is an unweighted graph Obviously, BFS needs an unweighted graph!

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