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A circular queue has been implemented using a singly linked list where each node consists of a value and a single pointer pointing to the next node. We maintain exactly two external pointers FRONT and REAR pointing to the front node and the rear node of the queue, respectively. Which of the following statements is/are CORRECT for such a circular queue, so that insertion and deletion operations can be performed in O(1) time?
(I) Next pointer of front node points to the rear node.
(II) Next pointer of rear node points to the front node.
  • a)
    A
  • b)
    B
  • c)
    C
  • d)
    D
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A circular queue has been implemented using a singly linked list where...
Answer is Next pointer to Rear node has Pointer to Front node.
Hence, only  II is correct.
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A circular queue has been implemented using a singly linked list where each node consists of a value and a single pointer pointing to the next node. We maintain exactly two external pointers FRONT and REAR pointing to the front node and the rear node of the queue, respectively. Which of the following statements is/are CORRECT for such a circular queue, so that insertion and deletion operations can be performed in O(1)time?(I) Next pointer of front node points to the rear node.(II) Next pointer of rear node points to the front node.a)Ab)Bc)Cd)DCorrect answer is option 'B'. Can you explain this answer?
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