41. True or False? Searching the components of an unordered list ADT is faster w

Question

41. True or False? Searching the components of an unordered list ADT is faster with a linked list representation than with a direct array representation.

a) true

b) false

42. True or False? If an operation that allows random access to individual components of a list ADT is defined and occurs frequently, it is better to represent the list directly as an array than to use a linked list.

a) true

b) false

43. To prevent a compile-time error, how should the code be changed?

a) Insert the following before line 1:
typedef ListNode* NodeType*;

b) Insert the following before line 1:
struct ListNode; typedef ListNode* NodeType*;

c) Replace line 4 with the following:
ListNode* next;

d) Do either b or c above.

e) Do any of a, b, or c above.

44. Given the code fragment

struct Node Type

{

                                         int data;

                                        Node Type* next;

};

NodeType* p;

NodeType* q;

p = new NodeType;

p->data = 12;

p->next = NULL;

q = new NodeType;

q->data = 5;

q->next = p;

which of the following expressions has the value 12?

a) q

b) q->data

c) q->next->data

d) q->next

e) none of the above

45. If a program accidentally corrupts the next member of a node in the middle of a linked list, how much of the original linked list is now inaccessible?

a) only the corrupted node is inaccessible

b) all nodes preceding the corrupted node are inaccessible

c) all nodes following the corrupted node are inaccessible

d) the entire linked list is inaccessible

46. True or False? If currPtr points to a node in a dynamic linked list, the operation currPtr++ advances to the next node in the list.

a) true

b) false

47. True or False? With a list ADT, insertions and deletions at the back of the list are faster with a linked list representation than with a direct array representation.

a) true

b) false

48. True or False? The next item in a linked list always can be found by accessing the next physical location in memory.

a) true

b) false

49. True or False? An array-based list automatically gives you an O(1) length operation, but in a linked implementation the
length operation can be either O(1) or O(N) depending on the design decision.

a) true

b) false

Explanation / Answer

41)Ans: False

42)Ans:True

43)Ans:d

44)Ans:c

45)Ans:c

46)Ans:False

47)Ans:True

48)Ans:False

49)Ans:False

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