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