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Which data structure is used in Breadth First Traversal of a graph?

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Which data structure is used in Breadth First Traversal of a graph?

(a) Stack

(b) Queue

(c) Array

(d) Tree

The question was asked during an online interview.

Origin of the question is Data Structures-Queue topic in section java.util – The Collections Framework of Java

1 Answer

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Best answer
Right choice is (b) Queue

The explanation: In Breadth First Traversal of graph the nodes at the same level are accessed in the order of retrieval (i.e FIFO).

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