Data Structures Algorithms-II MCQs

Page No. 12

Which of the following method is used for sorting in merge sort?


amerging

✓


bpartitioning

✖


cselection

✖


dexchanging

✖


View Answer merging

Merge sort can be implemented using O(1) auxiliary space.


a true

✓


bfalse

✖


cA & B

✖


dNone of these

✖


View Answer true

What is the auxiliary space complexity of merge sort?


aO(1)

✖


bO(log n)

✖


cO(n)

✓


dO(n log n)

✖


View Answer O(n)

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


abacktracking

✖


b greedy algorithm

✖


cdivide and conquer

✓


ddynamic programming

✖


View Answer divide and conquer

Choose the incorrect statement about merge sort from the following?


aboth standard merge sort and in-place merge sort are stable

✖


b standard merge sort has greater time complexity than in-place merge sort

✓


cstandard merge sort has greater space complexity than in-place merge sort

✖


din place merge sort has O(log n) space complexity

✖



In-place merge sort is a stable sort.


atrue

✓


bfalse

✖


cA & B

✖


dNone of these

✖


View Answer true

In place merge sort has same time complexity as standard merge sort.


a true

✖


bfalse

✓


cA & B

✖


dNone of these

✖


View Answer false

What is the space complexity of in place merge sort?


a O(1)

✖


bO(n)

✖


c O(log n)

✓


dO(n log n)

✖


View Answer O(log n)

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


abacktracking

✖


bgreedy algorithm

✖


cdivide and conquer

✓


ddynamic programming

✖


View Answer divide and conquer

Choose the correct statement about bottom up merge sort from the following?


abottom up merge sort has greater time complexity than standard merge sort

✖


bbottom up merge sort has lesser time complexity than standard merge sort

✖


cbottom up merge sort saves auxiliary space required on call stack

✓


dbottom up merge sort uses recursion.

✖



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