Data Structures Algorithms-II MCQs

Page No. 13

Bottom up merge sort is a stable sort.


a true

✓


bfalse

✖


cA & B

✖


dNone of these

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View Answer true

Bottom up merge sort uses recursion.


a true

✖


b false

✓


cA & B

✖


dNone of these

✖


View Answer false

Merge sort uses which of the following method to implement sorting?


amerging

✓


b partitioning

✖


cselection

✖


dexchanging

✖


View Answer merging

What is the auxiliary space complexity of bottom up merge sort?


a O(1)

✖


b O(n)

✓


cO(log n)

✖


dO(n log n)

✖


View Answer O(n)

What is the auxiliary space complexity of standard merge sort?


a O(1)

✖


bO(log n)

✖


cO(n)

✓


dO(n log n)

✖


View Answer O(n)

Which among the following is the best cut-off range to perform insertion sort within a quick sort?


a N=0-5

✖


bN=5-20

✓


cN=20-30

✖


dN>30

✖


View Answer N=5-20

Which is the worst method of choosing a pivot element?


afirst element as pivot

✓


blast element as pivot

✖


cmedian-of-three partitioning

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drandom element as pivot

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How many sub arrays does the quick sort algorithm divide the entire array into?


a one

✖


btwo

✓


cthree

✖


dfour

✖


View Answer two

Quick sort uses join operation rather than merge operation.


atrue

✓


bfalse

✖


cA & B

✖


dNone of these

✖


View Answer true

Which of the following sorting algorithms is used along with quick sort to sort the sub arrays?


aMerge sort

✖


bShell sort

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cInsertion sort

✓


dBubble sort\

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View Answer Insertion sort

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