9069401
Descrição
Quiz por Hanzo Conard, atualizado more than 1 year ago
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Criado por Hanzo Conard
mais de 7 anos atrás
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|
Questão 1
Questão
What are two parts of ADT?
Responda
-
Private and Public
-
ArrayList and Vector
-
Queue and Stack
-
Parent and Child
-
Int and float
Questão 2
Questão
Which of them has more methods?
Responda
-
Superclass
-
Subclass
Questão 3
Questão
The relationship when one class is a subclass of another is called...
Responda
-
is-a
-
has-a
Questão 4
Questão
The relationship when one class is defined inside the definition of another is called...
Responda
-
has-a
-
is-a
-
is-b
-
has-b
-
to-c
Questão 5
Questão
Redefinition of method of superclass in a subclass with the same name and number of parameters is...
Responda
-
Override
-
Overload
-
Overhead
-
Upperload
-
Overbeat
Questão 6
Questão
Redefinition of method with the same name but different number of parameters is called...
Responda
-
Overload
-
Override
-
Overflow
-
Upperride
-
Download
Questão 7
Questão
If you want to call the constructor of superclass you would use....
Responda
-
super.
-
super()
-
this.
-
this()
-
constructor()
Questão 8
Questão
If you want to call data member of superclass you would use...
Responda
-
super.
-
super()
-
this()
-
this.
-
method()
Questão 9
Questão
If you want to call different constructor of current class you would use...
Responda
-
this()
-
this.
-
super()
-
super.
-
current.
Questão 10
Questão
If there is at least one abstract method in a class, that class is called...
Responda
-
Abstract class
-
General class
-
Recursive class
-
Tired class
-
Vanish class
Questão 11
Questão
If there are no abstract methods in the class we call that class…
Responda
-
Abstract class
-
Actual class
-
Super class
-
Non Abstract class
-
Funny class
Questão 12
Questão
Which part is accessible to user ?
Responda
-
Public
-
Private
-
Protected
-
Social
-
Interactive
Questão 13
Questão
Is it possible to inherit from multiple classes?
Responda
-
Yes
-
No
Questão 14
Questão
Is it possible to implement multiple interfaces?
Responda
-
Yes
-
No
Questão 15
Questão
Every class has _____as a superclass
Responda
-
Object
-
JAVA
-
Subject
-
Main
-
String
Questão 16
Questão
This method returns a string that textually represents an object
Responda
-
toString()
-
equals()
-
toText()
-
toGo()
-
hashCode()
Questão 17
Questão
InstanceOf used to test ...
Responda
-
Whether an object belongs to class or not
-
Whether object is object or not
-
Whether object plays football or not
-
Whether object has parent or not
-
Whether is the biggest object or not
Questão 18
Questão
What is not perfect in this code: ave = sum/count;
Responda
-
Division by zero may occur
-
Multiplication by 1000000 is impossible in JAVA
-
Semicolon needed after =
-
ave should be written as average
-
It is not JAVA code
Questão 19
Questão
Attempt to convert a string that is not numeric to a number faults …
Responda
-
NumberFormatException
-
ArithmeticException
-
SDP4IsNotASubjectException
-
DoNotSpeakException
-
SadProgrammerException
Questão 20
Questão
Attempt to access array element using index less than zero folds
Responda
-
ArrayIndexOutOfBoundsException
-
ArithmeticException
-
GoHomeExpception
-
InputMismatchException
-
McDonerException
Questão 21
Questão
________ exception is an error normally due to programmer
Responda
-
checked
-
unchecked
-
broken
-
cracked
Questão 22
Questão
________ exception is an error normally not due to programmer
Responda
-
checked
-
unchecked
-
hacked
-
frozen
-
cracked
Questão 23
Questão
Which part is not accessible to user ?
Responda
-
private
-
shifted
-
controlled
-
based
-
public
Questão 24
Questão
How to handle exceptions?
Responda
-
try{} catch(){}
-
try{} batch(){}
-
poimai{}menya{}esli{}smozhesh{}
-
fly{}catch(){}
-
go{}home(){}
Questão 25
Questão
Which of the following is not example of visibility in Java ?
Responda
-
private
-
public
-
protected
-
package
-
eclipsed
Questão 26
Questão
Returns the reference to the element at position index
Responda
-
get(index)
-
set(index)
-
has(index)
-
goTo(index)
-
fly(index)
Questão 27
Questão
Get the size of ArrayList
Responda
-
size()
-
size(list)
-
sizeOf()
-
length
-
length(list)
Questão 28
Questão
Sets the element on position Index to reference entry
Responda
-
set(index, entry)
-
setTo(index, entry)
-
index.set(entry)
-
entry.set(index)
-
set.index(entry)
Questão 29
Questão
Public xxx(int index){
return theData[index];
}
this behavior is similar to which method of ArrayList class?
Responda
-
get
-
set
-
size
-
equals
Questão 30
Questão
What is the time complexity of insert(index) method in ArrayList
Responda
-
O(n)
-
O(1)
-
O(logn)
-
O(n^2)
-
O(m*n)
Questão 31
Questão
What is the difference between ArrayList and Vector?
Responda
-
Vector is synchronized, where ArrayList is not
-
Vector is scalable, where ArrayList is not
-
Vector is flexible, where ArrayList is not
-
Vector is resizable, where ArrayList is not
-
There is no difference
Questão 32
Questão
for(int i = 0; i < size; i++) {
If(theData[i] == entry) {
Return i;
}
Return -1;
}
This method is similar to which method of ArrayList
Responda
-
indexOf(entry)
-
get(entry)
-
set(entry)
Questão 33
Questão
Indicate constant time complexity in terms of Big-O notation
Responda
-
O(1)
-
O(n)
-
O(n^2)
-
O(const)
-
O(logn)
Questão 34
Questão
The collection of abstract methods is called ...
Responda
-
Interface
-
Abstract class
-
Class
-
Method
-
Function
Questão 35
Questão
Indicate logarithm time complexity in terms of big-O notation?
Responda
-
O(logn)
-
O(n^2)
-
O(n)
-
O(1)
-
O(done)
Questão 36
Questão
Indicate linear time complexity in terms of big-O notation?
Responda
-
O(n)
-
O(n^2)
-
O(n^3)
-
O(logn)
-
O(loglogn)
Questão 37
Questão
Indicate exponential time complexity in terms of big-O notation?
Responda
-
O(2^n)
-
O(n^2)
-
O(logn)
-
O(n)
-
O(n^4)
Questão 38
Questão
Find the slowest time
Responda
-
O(n!)
-
O(2^n)
-
O(n)
-
O(n^4)
-
O(100)
Questão 39
Questão
What is the time complexity of ArrayList remove(index) method
Responda
-
O(n)
-
O(1)
-
O(n * n)
-
O(logn)
-
O(n^3)
Questão 40
Questão
What is the time complexity of adding an item in front of a LinkedList
Responda
-
O(1)
-
O(n)
-
O(n^2)
-
O(n^3)
-
O(nlogn)
Questão 41
Questão
What is the time complexity of adding element in the beginning of ArrayList
Responda
-
O(n)
-
O(1)
-
O(logn)
-
O(nlogn)
-
O(n^2)
Questão 42
Questão
Which method searches for target and returns its position in LinkedList?
Responda
-
indexOf(target)
-
get(target)
-
set(target)
-
equal(target)
Questão 43
Questão
Indicate polynomial time complexity
Responda
-
O(n^const) (const = 2,3…)
-
O(nlogn)
-
O(logn)
-
O(2^n)
-
O(1)
Questão 44
Questão
How to remove item from LinkedList?
Responda
-
Change Link of previous item to next item of item to be removed
-
Change Link of next item to previous item of item to be removed
-
Change Link of removing item to next
-
Change Link of removing item to previous
-
Go home and cry
Questão 45
Questão
What is attribute of CircularList
Responda
-
Next of last item referencing to the first item
-
Next of first item referencing to the last item
-
Prev of last item referencing to the last item
-
Next of best item referencing to the worst item
-
I need to go home and prepare this
Questão 46
Questão
Which of the following in Java is very similar to “contract” ?
Responda
-
Interface implementation
-
Class inheritance
-
Method overloading
-
Class overriding
Questão 47
Questão
List iterator and iterator is the same thing in JAVA
Responda
- True
- False
Questão 48
Questão
Is it possible to traverse containing of a list this way?
for(int nextInt : aList) {… }
Responda
-
Yes
-
No
-
May be
-
I don't know
Questão 49
Questão
Show the method which exists in a DoubleLinkedList and not exist in a SingleLinkedList
Responda
-
constructor
-
next()
-
hasNext()
-
previous()
-
hasBefore()
Questão 50
Questão
What relationship class Node and LinkedList have?
Responda
-
is-a
-
has-a
-
Is-b
-
to-c
-
They are couple
Questão 51
Questão
Which of them is NOT an example of Data Structure ?
Responda
-
Breadth First Search
-
ArrayList
-
Graph
-
Priority Queue
-
Set
Questão 52
Questão
Which of them is NOT feature of collection interface ?
Responda
-
Graph
-
Set
-
List
-
Queue
-
Vector
Questão 53
Questão
This returns TRUE if the collection contains object
Responda
-
contains(obj)
-
IndexOf(obj)
-
IndexF(obj)
-
find(obj)
-
goTo(obj)
Questão 54
Questão
Elements of a List are accessed by means of an
Responda
-
index
-
switch
-
position
-
loop
-
book
Questão 55
Questão
A list can ___ or ___ as items(elements) are added or removed
Responda
-
grow, shrink
-
flow, shrink
-
increase, grow
-
decrease, think
-
fly, sit
Questão 56
Questão
OOP stands for?
Responda
-
Object oriented programming
-
Obstacle oriented programming
-
Object oriented playing
-
Omar oriented programming
Questão 57
Questão
The Collection is a _____ of a List ?
Responda
-
superinterface
-
parent
-
interface
-
father
-
node
Questão 58
Questão
Which method returns an object at the top of a Stack in JAVA?
Responda
-
pop()
-
peek()
-
front()
-
poll()
-
top()
Questão 59
Questão
Which method adds an item on the top of a Stack in JAVA?
Responda
-
push()
-
add()
-
peek()
-
top()
-
bush()
Questão 60
Questão
First in last out structure is ...
Responda
-
Stack
-
Queue
-
Graph
-
Set
-
Tree
Questão 61
Questão
Which structure is widely used in finding palindrome?
Responda
-
Stack
-
Queue
-
Set
-
Map
-
Graph
Questão 62
Questão
Which structure is widely used to calculate the value of postfix expression?
Responda
-
Queue
-
Stack
-
Set
-
Graph
-
List
Questão 63
Questão
Calculate value of “4 7 * 20-“
Responda
-
8
-
1
-
136
-
144
-
3
Questão 64
Questão
Ability of object of one class to act like it is an object of another class
Responda
-
Polymorphism
-
Encapsulation
-
Inheritance
-
Java code
-
SLOC(Source Line Of Code)
Questão 65
Questão
What does method empty return for empty stack?
Responda
-
True
-
False
-
Nothing
-
Empty
-
Hello
Questão 66
Questão
Waiting line of people is similar to which data structure?
Responda
-
Queue
-
Stack
-
Tree
-
Graph
-
LinkedList
Questão 67
Questão
If we call remove() function for the queue, which item will be removed
Responda
-
first
-
last
-
middle
-
second
-
third
Questão 68
Questão
Which function return first added item in the queue?
Responda
-
front()
-
first()
-
element()
-
goBack()
-
giveMeFirst()
Questão 69
Questão
Which function is used to add new item in the queue?
Responda
-
offer()
-
suffer()
-
add()
-
poll()
-
remove()
Questão 70
Questão
First-in first-out data structure ...
Responda
-
Queue
-
Stack
-
Set
-
Graph
-
List
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