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# Data Structures Important Exam Questions and Answers PDF

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## Data Structures MCQs: Data Structures Important Exam Questions and Answers

MCQ 1:

The heap sort has an average-case complexity of

1. O(n)
2. ?(n log(n))
3. ?(n log(n))
4. O(log n)
MCQ 2:

Binary search has a worst-case complexity of

1. O(n'+1)
2. O(nk)
3. O(log n)
4. O(n+k)
MCQ 3:

Linear search has a worst-case complexity of

1. O(1)
2. O(n)
3. O(log 1)
4. O(log n)
MCQ 4:

The heap sort has a best-case complexity of

1. ?(n log(n))
2. ?(n log(n))
3. O(n log(n))
4. O(n)
MCQ 5:

The best-case complexity of bubble-sort is

1. ?(n^2)
2. O(n^2)
3. O(log n)
4. ?(n)