Breadth-first search program code in c

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We also use third-party cookies that help us analyze and understand how you use this website. Explore Python Examples. Popular Examples Add two numbers. Check prime number. Find the factorial of a number. Print the Fibonacci sequence. Check leap year. DSA Introduction What is an algorithm? Strongly Connected Components. Breadth first search In this tutorial, you will learn about breadth first search algorithm.

BFS algorithm A standard BFS implementation puts each vertex of the graph into one of two categories: Visited Not Visited The purpose of the algorithm is to mark each vertex as visited while avoiding cycles. The algorithm works as follows: Start by putting any one of the graph's vertices at the back of a queue.

Take the front item of the queue and add it to the visited list. Generic; using System. Linq; using System. AddLast s ; while queue. First ; Console. AddEdge 0, 1 ; g. AddEdge 0, 2 ; g. AddEdge 1, 2 ; g. AddEdge 2, 0 ; g. AddEdge 2, 3 ; g. AddEdge 3, 3 ; Console.

Since, vertex 5 has been traversed upon before, we will not traverse it again. However, vertex 8 has not yet been visited. So we will traverse on vertex 8. The traversal would be: 0 1 3 4 2 6 5 7 8. Now, we need to visit vertices adjacent to vertex 8. However, there is no vertex adjacent to vertex 8 and hence we will have to stop the traversal here. This program reaches only those vertices that are reachable from the start vertex.

This was of great help. But I have two questions. In the input, you have excluded two connections : 1 4 and 3 4 ; while I ran this code including these edged, it rendered the same output. What is actually happening here? Do you have a Dijkstra code written in the same fashion?

If so, plz provide me.