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Which of the following is true about BFS?

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Question: Which of the following is true about BFS?

Options:

  1. It uses a stack
  2. It finds the shortest path in unweighted graphs
  3. It is faster than DFS
  4. It cannot be implemented recursively

Correct Answer: It finds the shortest path in unweighted graphs

Solution: 

BFS finds the shortest path in unweighted graphs by exploring all neighbors at the present depth prior to moving on to nodes at the next depth level.

Which of the following is true about BFS?

Practice Questions

Q1
Which of the following is true about BFS?
  1. It uses a stack
  2. It finds the shortest path in unweighted graphs
  3. It is faster than DFS
  4. It cannot be implemented recursively

Questions & Step-by-Step Solutions

Which of the following is true about BFS?
  • Step 1: Understand what BFS stands for. BFS means Breadth-First Search, which is a way to explore graphs.
  • Step 2: Know that BFS starts at a specific node (called the root) and explores all its neighbors first.
  • Step 3: After exploring all neighbors of the current node, BFS moves on to the neighbors of those neighbors, going one level deeper.
  • Step 4: This process continues until all nodes at the current depth level are explored before moving to the next level.
  • Step 5: In unweighted graphs, BFS guarantees that the first time it reaches a node, it has found the shortest path to that node.
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