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