What is the role of Breadth-First Search (BFS) in graph traversal?A) Ensures shortest path between nodesB) Visits nodes level by level from the start nodeC) Calculates the average distance between nodesD) Finds the maximum flow in a graph
Question
What is the role of Breadth-First Search (BFS) in graph traversal?A) Ensures shortest path between nodesB) Visits nodes level by level from the start nodeC) Calculates the average distance between nodesD) Finds the maximum flow in a graph
Solution
The role of Breadth-First Search (BFS) in graph traversal is B) Visits nodes level by level from the start node.
BFS starts traversal from the root node (or any arbitrary node of a graph, in case of a disconnected graph) and visits nodes in a level by level manner (i.e., visiting the ones closest to the root first). It uses a queue data structure to remember to visit the next node and to keep track of the nodes that have been marked. This property allows BFS to find the shortest path between the starting node and any other reachable node.
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