1
GATE CSE 2016 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Assume that the algorithms considered here sort the input sequences in ascending order. If the input is already in ascending order, which of the following are TRUE?

$$\,\,\,\,\,\,\,{\rm I}.\,\,\,\,\,\,\,$$ Quicksort runs in $$\Theta \left( {{n^2}} \right)$$ time
$$\,\,\,\,\,{\rm I}{\rm I}.\,\,\,\,\,\,\,$$ Bubblesort runs in $$\Theta \left( {{n^2}} \right)$$ time
$$\,\,\,{\rm I}{\rm I}{\rm I}.\,\,\,\,\,\,\,$$ Mergesort runs in $$\Theta \left( n \right)$$ time
$$\,\,\,{\rm I}V.\,\,\,\,\,\,\,$$ Insertion sort runs in $$\Theta \left( n \right)$$ time

A
$${\rm I}$$ and $${\rm II}$$ only
B
$${\rm I}$$ and $${\rm III}$$ only
C
$${\rm II}$$ and $${\rm IV}$$ only
D
$${\rm I}$$ and $${\rm IV}$$ only
2
GATE CSE 2016 Set 1
MCQ (Single Correct Answer)
+1
-0.3
The worst case running times of Insertion sort, Merge sort and Quick sort, respectively, are:
A
$$\Theta \left( {n\,\log n} \right),\Theta \left( {n\,\log n} \right),\,\,$$ and $$\,\,\Theta \left( {{n^2}} \right)$$
B
$$\Theta \left( {{n^2}} \right),\Theta \left( {{n^2}} \right),\,\,$$ and $$\,\,\Theta \left( {n\,\log n} \right)$$
C
$$\Theta \left( {{n^2}} \right),\,\,\Theta \left( {n\,\log n} \right),\,\,$$ and $$\,\,\Theta \left( {n\,\log n} \right)$$
D
$$\Theta \left( {{n^2}} \right),\Theta \left( {n\,\log n} \right),\,\,$$ and $$\,\,\Theta \left( {{n^2}} \right)$$
3
GATE CSE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Consider the following array of elements.

$$\,\,\,\,\,\,\,\,$$$$〈89, 19, 50, 17, 12, 15, 2, 5, 7, 11, 6, 9, 100〉$$

The minimum number of interchanges needed to convert it into a max-heap is
A
$$4$$
B
$$5$$
C
$$2$$
D
$$3$$
4
GATE CSE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
An unordered list contains $$n$$ distinct elements. The number of comparisons to find an element in this list that is neither maximum nor minimum is
A
$$\Theta \left( {n\,\,\log \,\,n} \right)$$
B
$$\Theta \left( n \right)$$
C
$$\Theta \left( {\log \,\,n} \right)$$
D
$$\Theta \left( 1 \right)$$
GATE CSE Subjects
Software Engineering
Web Technologies
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