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2 years ago

4. When the keyword ____________________ is followed by a parenthesis, it indicates a call to the superclass constructor.

Computers and Technology

1 answer:

Andreyy892 years ago

5 0

Answer:

Super

Explanation:

In object-oriented programming (OOP) language, an object class represents the superclass of every other classes when using a programming language such as Java. The superclass is more or less like a general class in an inheritance hierarchy. Thus, a subclass can inherit the variables or methods of the superclass.

Basically, all instance variables that have been used or declared in any superclass would be present in its subclass object.

Hence, when the keyword super is followed by a parenthesis, it indicates a call to the superclass constructor and it should be the first statement declared in the subclass constructor.

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A network administrator has been given a network of 172.16.85.0/21 and wants to know the usable range of IP addresses on that su

viktelen [127]

Answer:

The correct answer to the following question will be option C.

172.16.80.1-172.16.87.254

Explanation:

IP Address: IP Address stands for Internet Protocol Address, a unique numerical label allotted to every computer network that are connected to the network of the computer and communicate through the internet protocol.

An IP address can be separated by periods and having four numbers that are called Octet. Range of IP address can be from 0 to 255.
We have to keep the first 21 bits and start setting all from the 22nd bit on to 0 (zero).

To get the suitable and the correct range of the address, we add and subtract 1 from the given broadcast address i.e.,172.16.85.0/21.

So, option C is the right answer and no other option is usable according to the given explanation and the address given by the administrator.

3 0

3 years ago

Coupon collector is a classic statistic problem with many practical applications. The problem is to pick objects from a set of o

ahrayia [7]

Answer:

Here is the JAVA program:

public class Main { //class name

public static void main(String[] args) { //start of main method

//sets all boolean type variables spades, hearts diamonds and clubs to false initially

boolean spades = false;

boolean hearts = false;

boolean diamonds = false;

boolean clubs = false;

String[] deck = new String[4]; //to store card sequence

int index = 0; //to store index position

int NoOfPicks = 0; //to store number of picks (picks count)

while (!spades || !hearts || !diamonds || !clubs) { //loop starts

String card = printCard(getRandomCard()); //calls printCard method by passing getRandomCard method as argument to it to get the card

NoOfPicks++; //adds 1 to pick count

if (card.contains("Spades") && !spades) { //if that random card is a card of Spades and spades is not false

deck[index++] = card; //add that card to the index position of deck

spades = true; //sets spades to true

} else if (card.contains("Hearts") && !hearts) { //if that random card is a card of Hearts and hearts is not false

deck[index++] = card;

hearts = true; //sets hearts to true

} else if (card.contains("Diamond") && !diamonds) { //if that random card is a card of Diamond and diamonds is not false

deck[index++] = card;

diamonds = true; //sets diamonds to true

} else if (card.contains("Clubs") && !clubs) { if that random card is a card of Clubs and clubs is not false

deck[index++] = card;

clubs = true; } } //sets clubs to true

for (int i = 0; i < deck.length; i++) { //iterates through the deck i.e. card sequence array

System.out.println(deck[i]); } //prints the card number in deck

System.out.println("Number of picks: " + NoOfPicks); } //prints number of picks

public static int getRandomCard() { //gets random card

return (int) (Math.random() * 52); } //generates random numbers of 52 range

public static String printCard(int cardNo) { //displays rank number and suit

String[] suits = { "Spades", "Hearts", "Diamonds", "Clubs", }; //array of suits

String[] rankCards = { "Ace", "2", "3", "4", "5", "6", "7", "8", "9", "10",

"Jack", "Queen", "King" }; //array of rank

int suitNo = cardNo / 13; //divides card number by 13 and stores to suitNo

int rankNo = cardNo % 13; //takes modulo of card number and 13 and store it to rankNo

return rankCards[rankNo] + " of " + suits[suitNo]; }} //returns rankCard at rankNo index and suits at suitNo index

Explanation:

The program is explained in the comments attached with each line of code. The screenshot of the program along with its output is attached.

8 0

3 years ago

Write a function: function solution(N); that, given a positive integer N, prints the consecutive numbers from 1 to N, each on a

koban [17]

Answer:

The program written in Python is as follows:

def solution(N):

concat = ""

for i in range(1,N+1):

if not(i%2 == 0 or i%3 ==0 or i%5 == 0):

print(str(i))

else:

if i%2 == 0:

concat= concat+"Codility"

if i%3 == 0:

concat= concat+"Testers"

if i%5 == 0:

concat= concat+"Coders"

print(concat)

concat = ""

N = int(input("Enter a positive integer: "))

solution(N)

Explanation:

This line declares the function

def solution(N):

This line initializes a variable named concat to an empty string

concat = ""

This line iterates from 1 to the input integer

for i in range(1,N+1):

This line checks if the current number of iteration is divisible by 2,3 or 5, if no, the number is printed

if not(i%2 == 0 or i%3 ==0 or i%5 == 0):

print(str(i))

If otherwise

else:

This lines checks if current number is divisible by 2; if yes the string "Codility" is concatenated to string concat

if i%2 == 0:

concat= concat+"Codility"

This lines checks if current number is divisible by 3; if yes the string "Testers" is concatenated to string concat

if i%3 == 0:

concat= concat+"Testers"

This lines checks if current number is divisible by 2; if yes the string "Coders" is concatenated to string concat

if i%5 == 0:

concat= concat+"Coders"

The concatenated string is printed using this line

print(concat)

This variable concat is intialized back to an empty string

concat = ""

The main method starts here

N = int(input("Enter a positive integer: "))

This line calls the defined function solution

solution(N)

6 0

3 years ago

Jessica has pinned her favorite applications as icons on her desktop. She always clicks on these icons to work on them. Which us

Hatshy [7]

Answer:

Graphical User Interface (GUI)

Explanation:

Graphical User Interface clicking on various icons to perform a certain functionality. GUI is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, instead of text-based user interfaces or command line interface where you would have to type to run the program rather than just click it.

7 0

3 years ago

Why does fiber optic communication technology have a significant security advantage over other transmission technology? higher d

erik [133]

Higher data rates can be transmitted Hope this helps!

7 0

3 years ago