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Which of the following data structures is generally used to implement priority queue?
  • a)
    Table
  • b)
    Stack
  • c)
    Graph
  • d)
    Heap tree
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following data structures is generally used to implement ...
Priority queue can be implemented using an array, a linked list, a heap data structure. Among these data structures, heap data structure provides an efficient implementation of priority queues. In a normal queue, queue is implemented based on FIFO but in priority queue nodes are removed based on the priority.
Time complexity of priority queue using binary heap or binary search tree :
  • Insert operation takes : O( log n )
  • Delete operation takes : O (log n )
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