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Linked Lists Questions

NA
SHSTTON
515
Solv. Corr.
165
Solv. In. Corr.
680
Attempted
1 M:34 S
Avg. Time

11 / 48

Choose the correct option.

For a doubly linked list does the following segment of code removes the element pointed to by X , if it is assumed that X points to neither the first nor the last
element in the list.
X->prev->next = X->next;
X->next->prev = X->prev; ?


ATRUE

BFALSE

CNot Answer

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
371
Solv. Corr.
1314
Solv. In. Corr.
1685
Attempted
0 M:26 S
Avg. Time

12 / 48

Choose the correct option.

Analyse this structure and choose the correct option.

typedef struct node_s
{
struct node_s * prev;
struct node_s * next;
} node_t ; ?


AThis could be a node in a doubly linked list

BThe syntax is incorrect

CThe syntax is incorrect

DA linking error would occur because no data is present

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
212
Solv. Corr.
627
Solv. In. Corr.
839
Attempted
1 M:12 S
Avg. Time

13 / 48

Choose the correct option.

The following while loop is to remove duplicates from an existing list having a head pointer pointing to the first node.Which code will replace ____

current=head;
while(current->next!=NULL)
{
if (current->data == current->next->data)
{
____
}
else
{
current = current->next;
}
} ?


Ap=current->next->next;free(current);current->next = p;

Bp=current->next;free(p);

Cp=current->next;free(current->next);current->next=p;

Dp= current->next->next;free(current->next);current->next = p;

Answer: Option D

Explanation:

ok

Workspace

NA
SHSTTON
560
Solv. Corr.
806
Solv. In. Corr.
1366
Attempted
0 M:52 S
Avg. Time

14 / 48

Choose the correct option.

"p" and "q" are pointers to a node of the linked list, "head" points to the first node of the list, "next" points to the next node in the list, which of the following is true for the following piece of code:

for (p=head, q = head; p!=NULL; q = p)
{
p = p->next;
free(q);
}


ADeletes all nodes

BDeletes all but the last node

CDoes not delete any node

DThe program will crash

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
516
Solv. Corr.
673
Solv. In. Corr.
1189
Attempted
0 M:32 S
Avg. Time

15 / 48

What does the following function return, if q contains the address of the first element?
int function(NODE *q)
{ 
int c = 0;
while( q != NULL)
{ 
q = q->link;
c++;
} 
return (c);
} ?

AThe value of the last node of the linked list

BThe value of the first elements of the linked list

CThe address of the last element of the linked list

DThe number of elements in a linked list

Answer: Option D

Explanation:

Consider list1 and list2 linked lists given below:

list1: 15 -> 18 -> 25 -> 30

list2: 11 -> 14 -> 17 -> 23 -> 32 -> 56

What will be the elements of the queue that is returned by the code snippet given below when list1 and list2 are passed as arguments to function, fun?

def fun(input_list1,input_list2):   

 temp1 = input_list1.get_head()   

 temp2 = input_list2.get_head()  

  output_queue = Queue(10)   

 while(temp1 != None and temp2 != None):    

    if(temp1.get_data() < temp2.get_data()):         

   output_queue.enqueue(temp1.get_data())          

  temp1 = temp1.get_next()      

  elif(temp1.get_data() > temp2.get_data()):         

   output_queue.enqueue(temp2.get_data())       

     temp2 = temp2.get_next()     

   else:          

  output_queue.enqueue(temp2.get_data())          

  temp1 = temp1.get_next()           

 temp2 = temp2.get_next()   

 while(temp1 != None):       

 output_queue.enqueue(temp1.get_data())       

 temp1 = temp1.get_next()    

while(temp2 != None):       

 output_queue.enqueue(temp2.get_data())       

 temp2 = temp2.get_next()

  return output_queue

Note: Order of displaying the queue elements is from front to rear.  

Select one:

Workspace

NA
SHSTTON
464
Solv. Corr.
722
Solv. In. Corr.
1186
Attempted
0 M:26 S
Avg. Time

16 / 48

Choose the correct option.

Which among the following is true for doubly linked list ?


AThe left pointer of the right most node and no condition on the left most node

BThe right pointer of the right most node and no condition on the left most node

CThe left pointer of the right most node and right pointer of the left most node are null

DThe left pointer of the left most node and right pointer of the right most node are null

Answer: Option D

Explanation:

a

Workspace

NA
SHSTTON
844
Solv. Corr.
270
Solv. In. Corr.
1114
Attempted
0 M:8 S
Avg. Time

17 / 48

Choose the correct option.

The situation when in a linked list START=NULL is


AUnderflow

BOverllow

CHousefull

DSaturated

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
57
Solv. Corr.
484
Solv. In. Corr.
541
Attempted
0 M:10 S
Avg. Time

18 / 48

Choose the correct option.

The following is two way list


AGrounded header list

BCircular header list

CLinked list with header and traiter nodes

DNone of above

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
491
Solv. Corr.
625
Solv. In. Corr.
1116
Attempted
0 M:13 S
Avg. Time

19 / 48

Choose the correct option.

Linked lists are best suited


Afor relatively permanent collections of data

Bfor the size of the structure and the data in the structure are constantly changing

Cfor both of above situation

Dfor none of above situation

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
863
Solv. Corr.
114
Solv. In. Corr.
977
Attempted
0 M:4 S
Avg. Time

20 / 48

Choose the correct option.

Linked lists are best suited for


Arelatively permanent collections of data

Bthe size of the structure and the data in the structure are constantly changing

Cboth of above situation

Dnone of above situation

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

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