Data Structures Algorithms-II MCQs

Page No. 89

What will be the time complexity of the code to reverse stack recursively?


aO(n)


bO(n log n)


cO(log n)


dO(n2)


View Answer O(n2)

Which of the following takes O(n) time in worst case in array implementation of stack?


a pop


bpush


cisEmpty


dpop, push and isEmpty takes constant time



What is the time complexity of the program to reverse stack when linked list is used for its implementation?


aO(n)


b O(n log n)


cO(n2)


dO(log n)


View Answer O(n)

Which of the following is considered as the top of the stack in the linked list implementation of the stack?


aLast node


bFirst node


cRandom node


dMiddle node


View Answer First node

Stack can be reversed without using extra space by _____________


ausing recursion


busing linked list to implement stack


c using an extra stack


d it is not possible



What is the space complexity of program to reverse stack recursively?


a O(1)


bO(log n)


cO(n)


d O(n log n)


View Answer O(n)

Which of the following statement is true about stack?


aPop operation removes the top most element


bPop operation removes the bottom most element


cPush operation adds new element at the bottom


dPush operation removes the top most element



What is the bidirectional variant of selection sort?


acocktail sort


bbogo sort


cgnome sort


dbubble sort


View Answer cocktail sort

What is the average case time complexity of recursive selection sort?


aO(n log n)


bO(n log n)


cO(n2)


d O(log n)


View Answer O(n2)

What will be the best case time complexity of recursive selection sort?


a O(n)


bO(n2)


cO(log n)


dO(n log n)


View Answer O(n2)

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