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Which data structure is used to implement BFS?

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Question: Which data structure is used to implement BFS?

Options:

  1. Stack
  2. Queue
  3. Linked List
  4. Array

Correct Answer: Queue

Solution: 

BFS is implemented using a queue to keep track of the nodes to be explored.

Which data structure is used to implement BFS?

Practice Questions

Q1
Which data structure is used to implement BFS?
  1. Stack
  2. Queue
  3. Linked List
  4. Array

Questions & Step-by-Step Solutions

Which data structure is used to implement BFS?
  • Step 1: Understand what BFS (Breadth-First Search) is. It is a method for exploring nodes in a graph or tree.
  • Step 2: Know that BFS explores all neighbors of a node before moving to the next level of nodes.
  • Step 3: Realize that to keep track of which nodes to explore next, we need a way to store them.
  • Step 4: A queue is a data structure that works like a line, where you add items to the back and remove them from the front.
  • Step 5: In BFS, we use a queue to store the nodes that we need to explore next.
  • Step 6: When we visit a node, we add its neighbors to the back of the queue.
  • Step 7: We keep removing nodes from the front of the queue to explore them until there are no more nodes left.
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