## CS301 SOLVED QUIEZ 2020

*VU DAILY*

Question # 1 of 10 ( Start time: 11:21:05 PM ) Total M – 1

Local variables of a function are stored in,

Select correct option:

Binary Search Tree

Stack

Queue

AVL Tree

Question # 2 of 10 ( Start time: 11:21:39 PM ) Total M – 1

Compiler uses which one of the following in Function calls,

Select correct option:

Stack

Queue

Binary Search Tree

AVL Tree

Question # 3 of 10 ( Start time: 11:23:09 PM ) Total M – 1

A queue is a ________data structure, whereas a stack is a ________data structure.

Select correct option:

FIFO, LIFO

LIFO,FIFO

both of these

none of these

Question # 4 of 10 ( Start time: 11:24:21 PM ) Total M – 1

Which data structure allows deleting data elements from front and inserting at rear?

Select correct option:

Stacks

Queues

Deques

Binary search tree

Question # 5 of 10 ( Start time: 11:25:49 PM ) Total M – 1

In__________ the ‘next’ returns false when it reaches to the last node due to the fact that the next field of the last node is set to NULL.

Select correct option:

Circular linked list

Triple linked list

Singly linked list

None of the above

Question # 6 of 10 ( Start time: 11:26:12 PM ) Total M – 1

What will be postfix expression of the following infix expression? Infix Expression : a+b*c-d

Select correct option:

ab+c*d-

abc*+d-

abcd+*-

abc+*d-

Question # 7 of 10 ( Start time: 11:27:40 PM ) Total M – 1

Which of the following is NOT a linear data structure?

Select correct option:

Linked List

Stack

Queue

Tree

Question # 8 of 10 ( Start time: 11:28:38 PM ) Total M – 1

The next field in the last node in a singly-linked list is set to_______.

Select correct option:

0

1

NULL

false

Question # 9 of 10 ( Start time: 11:29:16 PM ) Total M – 1

A kind of expressions where the operator is present between two operands called ________expressions.

Select correct option:

Infix

Postfix

Prefix

None of the above

“+” is ____ operator.

unary

binary

**Consider a max heap, represented by the following array; 40,30,20,10,15,16,17,18,4 After inserting a nodes with value 35.Which of following is the updated max heap?**

**40,30,20,10,15,16,17,8,4,35**

40,30,20,10,35,16,17,8,4,15

40,35,20,10,30,16,17,8,4,15

40,35,20,10,15,16,17,18,4,30

**A Threaded Binary Tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a Link) ___________Successor.**

Preorder

**Inorder**

Postorder

Leveloder

**Which of the following is a property of binary tree?**

A Binary tree with N internal nodes has 2+N links, N-1 links to internal nodes and N+1 links to external nodes

A Binary tree with N internal nodes has 2*N links, N-1 links to internal nodes and N+1 links to external nodes.

A Binary tree with N internal nodes has 2-N links, N-1 links to internal nodes and N+1 links to external nodes.

**A Binary tree with N internal nodes has 2N links, N+1 links to internal nodes and N-1 links to external nodes.**

**A Threaded Binary tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link)_____________ successor.**

Preoder

**Inorder**

Postorder

Levelorder

**If there are 56 internal nodes in a binary tree then how many external nodes this binary tree will have?**

54

55

56

55

56

**57**

**Which of the following statement is correct?**

A threaded Binary tree is a binary tree in which every node that does not have a left child has a THREAD (in actual sense, a link) to its INORDER successor.

A threaded Binary tree is a binary tree in which every node that does not have a left child has a THREAD (in actual sense, a link) to its INORDER successor.

A threaded Binary tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its POSTORDER predecessor.

**A threaded Binary tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its PREORDER successor.**A threaded Binary tree is a binary tree in which every node that does not have a left child has a THREAD (in actual sense, a link) to its INORDER successor.

A threaded Binary tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its POSTORDER predecessor.

**It is necessary fro Huffman encoding tree to be,**

AVL tree

Complete binary Tree

None of these

**Binary tree**Complete binary Tree

None of these

**A binary tree with 45 internal nodes has _________ links to external nodes.**

44

45

90

45

**46**90

**In which of the following tree, parent nodes has key greater than or equal to its both children?**

Max heap

Binary search tree

Threaded Binary tree

Binary search tree

Threaded Binary tree

**Complete Binary tree****If one pointer of the nodes in a binary tree is NULL then it will be a/an**

Inner node

Leaf node

External node

Root node

Leaf node

External node

Root node

**If there are N external nodes is a binary tree then what will be the no. of the internal nodes in this binary tree?**

N-1

N

**N+1**

N+2

**See the below code and fill the appropriate answer for? Void fastlnorder(TreeNod+p) {while((p+nextInorder(p)) !+ ? ) cout << p->getInfo();}**

**Dummy**

rootNode

LTH

RTH

**In threaded binary tree, the NULL pointer are replaced by the.**

Preorder successor or Predecessor

**Inorder successor or predecessor**

Postorder successor or predecessor

NULL pointer are not replaced

**In which of the following tree, parent nodes has a key greater than or equal to its both children?**

Max heap

Binary search tree

Threaded Binary three

Complete Binary tree

Binary search tree

Threaded Binary three

Complete Binary tree

**In Complete binary tree the bottom level is filled from _______.**

**Left to right**

Right to left

Not filled at all

None of the given options

**If the bottom level of a binary tree is NOT completely filled, depicts that the tree is NOT a ________**

**Complete Binary tree**

Threaded Binary Tree

Expression tree

Perfectly compete Binary tree

**If an expression tree is correct then its root should have,**

**An operator**

(

)

an operand

**In threaded binary tree, the NULL pointers are replaced by the.**

Preorder successor or predecessor

Inorder successor or predecessor

Postorder successor or predecessor

NULL pointer are not replaced

Inorder successor or predecessor

Postorder successor or predecessor

NULL pointer are not replaced

**A complete binary tree is a tree that is ________ filled, with the possible exception of the bottom level.**

Partially

Incompletely

Partly

**Completely**Incompletely

Partly

**If the bottom level of a binary tree is not completely filled, depicts that the tree is not a _________.**

Expression tree

Threaded binary tree

Perfectly complete binary tree

Threaded binary tree

**Complete binary tree**Perfectly complete binary tree

**An expression tree will always be a,**

Complete binary tree

**Binary search tree**

Heap AVL tree

**Which of the following is a property of binary tree?**

A binary tree of N external nodes has N internal node

**A Binary tree of N internal nodes has N+1 external node**

A Binary tree of N external nodes has N+1 internal node

A Binary tree of N internal has N-1 external node

**In a threaded binary tree which nodes have NULL child pointers,**

**All leaf nodes**

Nodes other then leaf nodes

Root Node

None of the nodes

**In threaded binary tree, the NULL pointers are replaced by the**

preorder successor or predecessor

**inorder successor or predecessor**

postorder successor or predecessor

NULL pointers are not replaced

**A complete binary tree is a tree that is**

*_______*

**filled, with the possible exception of the bottom level.**

partially

**completely**

incompletely

partly

**Which one of the following is TRUE about iteration?**

Iterative function calls consumes a lot of memory

Threaded Binary Trees use the concept of iteration

**Iteration extensively uses stack memory**

Recursion is more efficient than iteration

**We implement the heap by**

*____________*

**.**

Threaded Tree

AVL tree

**Complete binary tree**

Expression

**Which of the following statement concerning heaps is NOT true?**

**Traversing a heap in order provides access to the data in numeric or alphabetical order.**

Removing the item at the top provides immediate access to the key value with highest (or lowest) priority.

Inserting an item is always done at the end of the array, but requires maintaining the heap property.

A heap may be stored in an array.

**Which of the following statement concerning heaps is NOT true?**

A heap can be stored in a binary search tree.

A heap can be stored in an array.

A heap can be used to implement a priority queue.

A heap can be used to sort data.

**A complete binary tree is a tree that is _________ filled, with the possible exception of the bottom level.**

partially

**completely**

incompletely

partly

**By using __________we avoid the recursive method of traversing a Tree, which makes use of stacks and consumes a lot of memory and time.**

Binary tree only

Heap data structure

Huffman encoding

**Which of the following statement is true about dummy node of threaded binary tree?**

The left pointer of dummy node points to the itself while the right pointer points to the root of tree.

The left pointer of dummy node points to the root node of the tree while the right pointer points itself i.e. to dummy node.

The left pointer of dummy node points to the root node of the tree while the right pointer is always NULL.

The right pointer of dummy node points to the itself while the left pointer is always NULL.

**Threaded binary tree**

**When a complete binary tree, represented by an array then for any array element at position i, the parent is at position ______ .**

2i-1

2i

2i+1

**floor(i/2)**

**When a complete binary tree represented by an array then if right child is at position 5 then left child will be at position _____**

2

3

**4**

6

**A binary tree with N internal nodes has _____ links, _______ links to internal nodes and ________ links to external nodes.**

**2N, N-1, N+1**

N-1, 2N, N+1

N+1, 2N, N-1

N+1, N-1, 2N

**If a binary tree has N + 1 external nodes then,**

**It has N internal nodes**.

It has N-1 internal nodes.

It has N/2 internal nodes.

It has N+2 internal nodes.

**A binary tree with 45 internal nodes has _______links to external nodes.**

44

45

46

90

**Consider a binary tree, represented by the following array: 10,7,9,5,2,1,6,3,4 This is a ________.**

Min heap

Max heap (Not Sure)

Threaded binary tree

Binary Search tree

**Consider a binary tree, represented by the following array: A,B,C,D,E,F,G,I Is it a strictly binary tree ?**

Yes

**No**

**In threaded binary tree the NULL pointers are replaced by the**

preorder successor or predecessor

**inorder successor or predecessor**

inorder successor or predecessor

NULL pointers are not replaced

**Consider a binary tree, represented by the following array: A,B,C,D,E,F,G,H,I,J,K,L Is it a strictly binary tree?**

Yes

**No**

**We implement the heap by ______________ .**

Threaded Tree

AVL tree

**Complete binary tree**

Expression

**If there are 56 internal nodes in a binary tree then how many external nodes this binary tree will have?**

► 54

► 55

► 56

**► 57**

**Which of the following statements is correct property of binary trees?**

► A binary tree with N internal nodes has N+1 internal links.

► A binary tree with N external nodes has 2N internal nodes.

**► A binary tree with N internal nodes has N+1 external nodes.**

► None of above statement is a property of the binary tree.

**Which of the following is a property of binary tree?**

► A binary tree of N external nodes has N internal node.

**► A binary tree of N internal nodes has N+ 1 external node.**

► A binary tree of N external nodes has N+ 1 internal node.

► A binary tree of N internal nodes has N- 1 external node.

**Which of the following statement is true about dummy node of threaded binary tree?**

► The left pointer of dummy node points to the itself while the right pointer points to the root of tree.

**► The left pointer of dummy node points to the root node of the tree while the right pointer points itself i.e. to**

*dummy*

**node**

► The left pointer of dummy node points to the root node of the tree while the right pointer is always NULL.

► The right pointer of dummy node points to the itself while the left pointer is always NULL.

**If the bottom level of a binary tree is NOT completely filled, depicts that the tree is NOT a**

► Expression tree

► Threaded binary tree

►

**complete Binary tree**

► Perfectly complete Binary tree

**Which of the following statement is correct about find(x) operation:**

**► A find(x) on element x is performed by returning exactly the same node that is found.**

► A find(x) on element x is performed by returning the root of the tree containing x.

► A find(x) on element x is performed by returning the whole tree itself containing x.

► A find(x) on element x is performed by returning TRUE.

**If there are 23 external nodes in a binary tree then what will be the no. of internal nodes in this binary tree?**

**►**23

**►**2

**►**21

**► 22**

f there are N external nodes in a binary tree then what will be the no. of internal nodes in this binary tree?

**► N -1**

**►**N+1

**►**N+2

**►**N

**Which of the following statement is correct?**

**►**A Threaded Binary Tree is a binary tree in which every node that does not have a left child has a THREAD (in actual sense, a link) to its INORDER

successor.

**►**A Threaded Binary Tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its PREOREDR successor.

**► A Threaded Binary Tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its INORDER successor.**

**►**A Threaded Binary Tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its POSTORDER successor.

**By using __________we avoid the recursive method of traversing a Tree, which makes use of stacks and consumes a lot of memory and time.**

**►**Binary tree only

**► Threaded binary tree**

**►**Heap data structure

**►**Huffman encoding

**Consider a min heap, represented by the following array:**

**10,30,20,70,40,50,80,60**

**After inserting a node with value 31.Which of the following is the updated min heap?**

**► 10,30,20,31,40,50,80,60,70**

**►**10,30,20,70,40,50,80,60,31

**►**10,31,20,30,40,50,80,60,31

**►**31,10,30,20,70,40,50,80,60

**In complete binary tree the bottom level is filled from ________.**

**► Left to right**

**►**Right to left

**►**Not filled at all

**►**None of the given options

**In case of deleting a node from AVL tree, rotation could be prolong to the**

*root*

**node.**

**► Yes**

**►**No

**When an array of object is created dynamically then there is no way to provide parameterized constructors for array of objects.**

**True**

Flase

**Which of the following method is helpful in creating the heap at once?**

insert

add

update

add

update

**preculateDown**For a perfect binary tree of height 4. What will be the sum of heights of nodes?

31

3027

26

31

3027

26

For a perfect binary tree of height h, having N nodes, the sum of heights of nodes is _____________.

N – (h – 1)

N – (h + 1)

N – 1

N – 1 + h

If we want to find median of 50 elements, then after applying buildHeap method, how many times deleteMin method will be called ?

5

25

35

50

N – (h + 1)

N – 1

N – 1 + h

If we want to find median of 50 elements, then after applying buildHeap method, how many times deleteMin method will be called ?

5

25

35

50

Which of the following heap method increase the value of key at position ‘p’ by the amount ‘delta’?

increaseKey(p,delta)

decreaseKey(p,delta)

preculateDown(p,delta)

remove(p,delta)

The main reason of using heap in priority queue is

improve performance

code is readable

less code

heap can’t be used in priority queues

decreaseKey(p,delta)

preculateDown(p,delta)

remove(p,delta)

The main reason of using heap in priority queue is

improve performance

code is readable

less code

heap can’t be used in priority queues

The total number of nodes on 10th level of a perfect binary tree are :

256

512

1024

Can’t be determined

Which property of equivalence relation is satisfied if we say: Ahmad R(is related to) Ahmad

512

1024

Can’t be determined

Which property of equivalence relation is satisfied if we say: Ahmad R(is related to) Ahmad

Reflexivity

Symmetry

Transitivity

All of the above

Which of the following heap method lowers the value of key at position ‘p’ by the amount ‘delta’?

Symmetry

Transitivity

All of the above

Which of the following heap method lowers the value of key at position ‘p’ by the amount ‘delta’?

increaseKey(p,delta)

decreaseKey(p,delta)

preculateDown(p,delta)

remove(p,delta)

We can build a heap in _____ time.

decreaseKey(p,delta)

preculateDown(p,delta)

remove(p,delta)

We can build a heap in _____ time.

Linear

Exponential

Polynomial

None of the given options

Exponential

Polynomial

None of the given options

If a tree has 50 nodes, then the total edges/links in the tree will be :

55

51

50

49 N-1= 49

51

50

49 N-1= 49

Note:-