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Time complexity of fractional knapsack problem is ____________

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Time complexity of fractional knapsack problem is ____________

(a) O(n log n)

(b) O(n)

(c) O(n^2)

(d) O(nW)

This question was posed to me in semester exam.

I need to ask this question from Greedy Algorithms in section Greedy Algorithms of Data Structures & Algorithms II

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Correct answer is (a) O(n log n)

The best I can explain: As the main time taking a step is of sorting so it defines the time complexity of our code. So the time complexity will be O(n log n) if we use quick sort for sorting.

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