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What is the run time efficiency of delete-min operation?

(a) O(log N)

(b) O(logd N)

(c) O(d logd N)

(d) O(d)

Origin of the question is Heap in section Heap of Data Structures & Algorithms I

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The correct answer is (c) O(d logd N)

Explanation: The run time efficiency of a delete-min algorithm using d-1 comparisons is mathematically found to be O(d logd N).

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