Data Structures Algorithms-II MCQs

Page No. 3

Which of the following false about Jump Search?


a Jump Search is better than Linear Search


bUseful when jumping back is more costly than jumping forward


c Jump Search is worse than Binary Search


d Jump search starts from the index 0 even though specified index is k



How can Jump Search be improved?


a Start searching from the end


bBegin from the kth item, where k is the step size


cCannot be improved


dStep size should be other than sqrt(n)



Given, arr = {1,3,5,6,7,9,14,15,17,19} key = 17 and delta = {5,3,1,0} How many key comparisons are made?(exclude the comparison used to decide the left or right sub array)


a 4


b3


c5


d 6


View Answer 3

In which of the cases uniform binary search fails compared to binary search?


aA table lookup is generally faster than an addition and a shift


b Many searches will be performed on the same array


cMany searches will be performed on several arrays of the same length


dComplexity of code


View Answer Complexity of code

Jump search has a worst case time complexity of O(n).


a True


bFalse


cA & B


dNone of these


View Answer False

Jump search is worse than linear search in terms of time complexity.


aTrue


b False


cA & B


dNone of these


View Answer False

Best case of jump search will have time complexity of _________


a O(1)


bUO(n)


cO(log n)


dO(n log n)


View Answer O(1)

In which of the following case jump search will be preferred over binary search?


ajumping backwards takes significantly more time than jumping forward


b jumping forward takes significantly more time than jumping backwards


cwhen the given array is very large in size


dwhen the given array is very small in size



Which of the following searching algorithm is fastest?


a jump search


bbinary search


clinear search


dall are equally fast


View Answer binary search

What is the value of jump taken for maximum efficiency while implementing jump search?


an/2


bn2


cn1/2


dlog n


View Answer n1/2

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