All categories

3 years ago

1) These are operators that add and subtract one from their operands.

Computers and Technology

1 answer:

adoni [48]3 years ago

7 0

Answer:

1) B (++ and --)

2) A (1 2 3 4 5)

Explanation:

In the first question, the operators ++ and -- are used in almost all programming languages for adding and subtracting 1 respectively from an operand.

In the second question using a while statement the numbers 1-5 is printed out because the variable n=1 is increased by 1 after each iteration.

You might be interested in

Implement a method called bubbleSort, that takes an ArrayList, sorts it using bubble sort algorithm, and returns a sorted list;

boyakko [2]

Answer:

Java algorithm is given below

Explanation:

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Random;

public class Temp {

static void bubbleSort(ArrayList<Integer> list) {

int n = list.size();

for (int p = 0; p < n - 1; p++)

for (int q = 0; q < n - p - 1; q++)

if (list.get(q) > list.get(q + 1)) {

int temp = list.get(q);

list.set(q, list.get(q + 1));

list.set(q + 1, temp);

}

static void selectionSort(ArrayList<Integer> list) {

int n = list.size();

for (int p = 0; p < n - 1; p++) {

int minimumIndex = p;

for (int q = p + 1; q < n; q++)

if (list.get(q) < list.get(minimumIndex))

minimumIndex = q;

int temp = list.get(p);

list.set(p, list.get(minimumIndex));

list.set(minimumIndex, temp);

}

static void insertionSort(ArrayList<Integer> list) {

int size = list.size();

int p, val, q;

for (p = 1; p < size; p++) {

val = list.get(p);

q = p - 1;

while (q >= 0 && list.get(q) > val) {

list.set(q + 1, list.get(q));

q = q - 1;

}

list.set(q + 1, val);

}

static void mergeSort(ArrayList<Integer> list, int low, int high) {

if (low < high && (high - low) >= 1) {

int mid = (high + low) / 2;

mergeSort(list, low, mid);

mergeSort(list, mid + 1, high);

merger(list, low, mid, high);

}

static void merger(ArrayList<Integer> list, int low, int mid, int high) {

ArrayList<Integer> mergedArray = new ArrayList<Integer>();

int left = low;

int right = mid + 1;

while (left <= mid && right <= high) {

if (list.get(left) <= list.get(right)) {

mergedArray.add(list.get(left));

left++;

} else {

mergedArray.add(list.get(right));

right++;

}

while (left <= mid) {

mergedArray.add(list.get(left));

left++;

}

while (right <= high) {

mergedArray.add(list.get(right));

right++;

}

int i = 0;

int j = low;

while (i < mergedArray.size()) {

list.set(j, mergedArray.get(i++));

j++;

}

public static void main(String[] args) throws Exception {

ArrayList<Integer> list = new ArrayList<>();

Random rand = new Random(System.currentTimeMillis());

for (int i = 0; i < 10000; i++) {

list.add(rand.nextInt(256));

}

long start = System.currentTimeMillis();

selectionSort(list);

int sel = (int) (System.currentTimeMillis() - start);

System.out.println("Selection Sort time (in ms): " + sel);

list.clear();

// ------------------------

rand = new Random(System.currentTimeMillis());

for (int i = 0; i < 10000; i++) {

list.add(rand.nextInt(256));

}

start = System.currentTimeMillis();

insertionSort(list);

int ins = (int) (System.currentTimeMillis() - start);

System.out.println("Insertion Sort time (in ms): " + ins);

list.clear();

// ------------------------

rand = new Random(System.currentTimeMillis());

for (int i = 0; i < 10000; i++) {

list.add(rand.nextInt(256));

}

start = System.currentTimeMillis();

bubbleSort(list);

int bub = (int) (System.currentTimeMillis() - start);

System.out.println("Bubble Sort time (in ms): " + bub);

list.clear();

// ---------------------------

rand = new Random(System.currentTimeMillis());

for (int i = 0; i < 10000; i++) {

list.add(rand.nextInt(256));

}

start = System.currentTimeMillis();

mergeSort(list, 0, list.size() - 1);

int mer = (int) (System.currentTimeMillis() - start);

System.out.println("Merge Sort time (in ms): " + mer);

long m = Math.min(Math.min(sel, ins), Math.min(bub, mer));

if (m == sel)

System.out.println("Selection Sort is fastest");

else if (m == ins)

System.out.println("insertion Sort is fastest");

else if (mer == m)

System.out.println("Merge Sort is fastest");

else if (m == bub)

System.out.println("Bubble Sort is fastest");

}

6 0

3 years ago

Kali linux os and window os who is the best

kogti [31]

Answer:

Windows

Explanation:

It is down to preference. I prefer windows due to its large compatibility with a wide range of apps.

4 0

3 years ago

Read 2 more answers

Banks and other financial service companies offer many types of accounts for client's to invest their fund-- every one of them h

monitta

Answer:

//Abstract class declaration of Account

public abstract class Account{

//nextId initialized to 10001

private static int nextId = 10001;

private int id;

private String name;

// constructor with one argument

public Account(String passName){

name = passName;

//assign the value of nextId to id

id = nextId;

//nextId is incremented

nextId++;

}

// accessor method to return id

public int getId(){

return id;

}

// accessor method to return name

public String getName(){

return name;

}

//abstract method that return object of type Cash

//It is not implemented here.

//It will be overriden and implemented by concrete subclassed

public abstract Cash getValue();

}

Explanation:

The abstract class Account is defined with the keyword abstract. Then inside the class, we declared and initialized an integer static variable nextId, an instance variable id and a String instance variable name.

A constructor is then defined which accept one argument of a string passName.

Two accessor methods getId and getName are declared. getId return an integer id, while getName return a string name.

Finally, an abstract method getValue is declared with no implementation and it return an object of type Cash.

6 0

4 years ago

Which technology do online storesusually use to present customized content?

k0ka [10]

Answer:

real time analytics technology

Explanation:

Online stores usually use real-time analytics technology to present customized content. Explanation: Real-time analytics is gaining popularity nowadays. It is basically the procedure of measuring and preparing the data as it enters the database

8 0

3 years ago

What is displayed on the console when running the following program?

uranmaximum [27]

I guess there should be the program code in your question. I presume that the complete version of your question is the following:

What is displayed on the console when running the following program?

public class Test {

public static void main(String[] args) {

try {

System.out.println("Welcome to Java");

int i = 0;

int y = 2 / i;

System.out.println("Welcome to HTML");

}

finally {

System.out.println("The finally clause is executed");

}

A. Welcome to Java, then an error message.

B. Welcome to Java followed by The finally clause is executed in the next line, then an error message.

C. The program displays three lines: Welcome to Java, Welcome to HTML, The finally clause is executed, then an error message.

D. None of the above.

Answer to the complete question with explanation:

B. Welcome to Java followed by The finally clause is executed in the next line, then an error message

After entering try/catch block program will output "Welcome to Java".

Then ArithmeticException will be raised at line:

int y = 2 / i;

The reason is division by 0 because i = 0.

After that finally clause will be executed despite exception thrown which will output "The finally clause is executed".

There could be a chance that you have modified answers to your question. In that case:

Answer to the original question:

a. Welcome to Java,

c. The finally clause is executed, then an error message.

7 0

3 years ago