What is the primary use of Breadth-First Search (BFS) in graph traversal?

Practice Questions

Q1
What is the primary use of Breadth-First Search (BFS) in graph traversal?
  1. Finding the shortest path in an unweighted graph
  2. Finding connected components in a graph
  3. Sorting the nodes of a graph
  4. Detecting cycles in a graph

Questions & Step-by-Step Solutions

What is the primary use of Breadth-First Search (BFS) in graph traversal?
  • Step 1: Understand what a graph is. A graph consists of nodes (or vertices) connected by edges.
  • Step 2: Learn about graph traversal. This means visiting all the nodes in a graph in a specific order.
  • Step 3: Know what Breadth-First Search (BFS) is. BFS is a method for traversing a graph level by level.
  • Step 4: Realize that BFS starts at a chosen node and explores all its neighbors first.
  • Step 5: After exploring all neighbors of the current node, BFS moves to the next level of nodes.
  • Step 6: Understand the primary use of BFS. It is mainly used to find the shortest path in an unweighted graph.
  • Step 7: Remember that 'unweighted' means all edges are considered equal in distance or cost.
  • Step 8: Conclude that BFS is effective for finding the shortest path because it explores all nodes at the current depth before going deeper.
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