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Linked Lists Questions

NA
SHSTTON
214
Solv. Corr.
1015
Solv. In. Corr.
1229
Attempted
0 M:43 S
Avg. Time

21 / 48

Choose the correct option.

How is linked list implemented


ANodes

BStructure

CReferential Structures

DNone of these

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
208
Solv. Corr.
819
Solv. In. Corr.
1027
Attempted
0 M:16 S
Avg. Time

22 / 48

Choose the correct option.

The concatenation of 2 lists can be performed O(1) time. Which of the following implementation of list should be used?


ASingly Linked List

BDoubly Linked List

CCircular Linked List

DArray Implementation Of Linked List

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
66
Solv. Corr.
229
Solv. In. Corr.
295
Attempted
0 M:5 S
Avg. Time

23 / 48

Choose the correct option.

Which of the following is not the properties of XOR lists?


AX⊕X = 0

B(X⊕Y)⊕Z = X⊕(Y⊕Z)

CX⊕0 = X

DX⊕0 = 1

ENone of these

Answer: Option D

Explanation:

The important properties of XOR lists are X⊕X=0 , X⊕0=X and (X⊕Y)⊕Z = X⊕(Y⊕Z).

Workspace

NA
SHSTTON
123
Solv. Corr.
167
Solv. In. Corr.
290
Attempted
0 M:17 S
Avg. Time

24 / 48

Choose the correct option.

What is a skip list?


Aa linkedlist with size value in nodes

Ba linkedlist that allows slower search within an ordered sequence

Ca linkedlist that allows faster search within an ordered sequence

Da tree which is in the form of linked list

ENone of these

Answer: Option C

Explanation:

It is a datastructure, which can make search in sorted linked list faster in the same way as binary search tree and sorted array (using binary search) are faster.

Workspace

NA
SHSTTON
80
Solv. Corr.
203
Solv. In. Corr.
283
Attempted
0 M:0 S
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25 / 48

Choose the correct option.

To which datastructure are skip lists similar to in terms of time complexities in worst and best cases?


Abalanced binary search trees

Bbinary trees

Cbinary search trees

Dlinked lists

ENone of these

Answer: Option A

Explanation:

Skip lists are similar to any randomly built binary search tree. a BST is balanced because to avoid skew tree formations in case of sequential input and hence achieve O(logn) in all 3 cases. now skip lists can gurantee that O(logn) complexity for any input.

Workspace

NA
SHSTTON
55
Solv. Corr.
208
Solv. In. Corr.
263
Attempted
0 M:0 S
Avg. Time

26 / 48

Choose the correct option.

In _____________ method, whenever a node is accessed, it might move to the head of the list if its number of accesses becomes greater than the records preceding it.


Aleast recently used

Btraspose

Ccount

Dexchange

ENone of these

Answer: Option C

Explanation:

In the count method, the number of times a node was accessed is counted and is stored in a counter variable associated with each node. Then the nodes are arranged in descending order based on their access counts. And the node with highest access count is head of the list.

Workspace

NA
SHSTTON
127
Solv. Corr.
132
Solv. In. Corr.
259
Attempted
0 M:0 S
Avg. Time

27 / 48

Choose the correct option.

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


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

Bno change

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

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

ENone of these

Answer: Option A

Explanation:

In Skip list we skip some of the elements by adding more layers. In this the skip list resembles balanced binary search trees. Thus we can change the time complexity from O (n) to O (logn)

Workspace

NA
SHSTTON
246
Solv. Corr.
497
Solv. In. Corr.
743
Attempted
0 M:13 S
Avg. Time

28 / 48

Choose the correct option.

Skip lists are similar to which of the following datastructure?


Astack

Bbinary search tree

Cheap

Dbalanced binary search tree

ENone of these

Answer: Option D

Explanation:

Skip lists have the same asymptotic time complexity as balanced binary search tree. For a Balanced Binary Search Tree, we skip almost half of the nodes after one comparison with root element. The same thing done in the skip lists. Hence skip lists are similar to balanced Binary search trees.

Workspace

NA
SHSTTON
64
Solv. Corr.
101
Solv. In. Corr.
165
Attempted
0 M:0 S
Avg. Time

29 / 48

Choose the correct option.

Which of the following statements are true ?
I. practical application of XOR linked lists are in environments with limited space requirements, such as embedded devices.
II. xor lists are not suitable because most garbage collectors will fail to work properly with classes or structures that don’t contain literal pointers
III. in order to calculate the address of the next node you need to remember the address of the previous node
IV. xor lists are much efficient than single, doubly linked lists and arrays


Ai, ii, iii, iv

Bi, ii

Ci, ii, iii

Di

ENone of these

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
135
Solv. Corr.
145
Solv. In. Corr.
280
Attempted
0 M:0 S
Avg. Time

30 / 48

Choose the correct option.

What does a xor linked list have ?


Aevery node stores the XOR of addresses of previous and next nodes

Bevery node stores the XOR of addresses of previous and next two nodes

Cactuall memory address of next node

Devery node stores xor 0 and the current node address

ENone of these

Answer: Option A

Explanation:

Every node stores the XOR of addresses.

Workspace

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