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MCQ

What is a skip list?

a linkedlist with size value in nodes

a linkedlist that allows faster search within an ordered sequence

a linkedlist that allows slower search within an ordered sequence

a tree which is in the form of linked list

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MCQ

node.next -> node.next.next; will make

node.next inaccessible

node.next.next inaccessible

this node inaccessible

none of the above

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MCQ

Can we read a data item at any location of a list within a constant time (i.e. O(1))?

Yes

Yes, only if the list is implemented by pointers (i.e. linked-list)

Yes, only if the list is implemented by an array

No, we need O(n) computation steps no matter what kind of implementation is used

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MCQ

If a list contains no elements it is said to be

Hollow

Empty

Finite

Infinite

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MCQ

What is the time complexity improvement of skip lists from linked lists in insertion and deletion?

O(n) to O(logn) where n is number of elements

O(n) to O(1) where n is number of elements

no change

O(n) to O(n2) where n is number of elements

Discussion

MCQ

How does implicit free lists(garbage collection) works in adding memory to free list ?

whichever comes last will be added to free list

whichever comes first will be added to free list

certain blocks cannot be used if there are no pointers to them and hence they can be freed

makes a probabilistic guess

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Abstract data types

Arrays

Lists

Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

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