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4 years ago

A significant and powerful aspect of the java language is the: (points : 1)

1 answer:

7 0

A significant and powerful aspect of the Java language is the: D. Object program. Java is inherently object-oriented, which means that Java programs are made up of programming elements called objects. [ [ Simply put, an object is a programming entity that represents either some real-world object or an abstract concept.

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Polygon transform (25 points). Write a library of static methods that performs various geometric transforms on polygons. Mathema

kari74 [83]

Answer:

import java.lang.*; //for using Math.cos() and Math.sin() and Math.toRadians() funcitons in rotate method

public class PolygonTransform

{

public static double[] copy(double[] array)

{

double[] newArray = new double[array.length];

for(int i=0;i<array.length;i++)

{

newArray[i] = array[i];

return newArray;

}

public static void scale(double[]x,double[]y,double alpha)

{

for(int i=0;i<x.length;i++)

{

x[i] *= alpha;

y[i] *= alpha;

}

public static void translate(double[]x,double[]y,double dx,double dy)

{

for(int i=0;i<x.length;i++)

{

x[i] += dx;

y[i] += dy;

}

public static void rotate(double[] x, double[]y,double theta)

{

double rad = Math.toRadians(theta);

double temp;

for(int i=0;i<x.length;i++)

{

temp = x[i]; //For storing temporarily the previous value of x before changing so tha it can be used in changing y

x[i] = x[i]*Math.cos(rad) - y[i]*Math.sin(rad);

y[i] = y[i]*Math.cos(rad) + temp*Math.sin(rad);

}

public static void main(String args[])

{

//This is just implementing you testcase discripted.

double[]x = new double[4];

double[]y = new double[4];

StdDraw.setScale(-5.0, +5.0);

x = { 0, 1, 1, 0 };

y = { 0, 0, 2, 1 };

double alpha = 2.0;

StdDraw.setPenColor(StdDraw.RED);

StdDraw.polygon(x, y);

scale(x, y, alpha);

StdDraw.setPenColor(StdDraw.BLUE);

StdDraw.polygon(x, y);

// Translates polygon by (2, 1).

StdDraw.setScale(-5.0, +5.0);

x = { 0, 1, 1, 0 };

y = { 0, 0, 2, 1 };

double dx = 2.0, dy = 1.0;

StdDraw.setPenColor(StdDraw.RED);

StdDraw.polygon(x, y);

translate(x, y, dx, dy);

StdDraw.setPenColor(StdDraw.BLUE);

StdDraw.polygon(x, y);

// Rotates polygon 45 degrees.

StdDraw.setScale(-5.0, +5.0);

x = { 0, 1, 1, 0 };

y = { 0, 0, 2, 1 };

double theta = 45.0;

StdDraw.setPenColor(StdDraw.RED);

StdDraw.polygon(x, y);

rotate(x, y, theta);

StdDraw.setPenColor(StdDraw.BLUE);

StdDraw.polygon(x, y);

}

Explanation:

6 0

3 years ago

The directory "a" contains its subdirectory "b" and there is no other entry in the directory "a". You want to display "the conte

Svet_ta [14]

The answer assumes that the question is about which command help accomplish display directory contents in Unix-like operating systems.

Answer:

The command is ls.

Explanation:

The command ls (short for list) displays a variety of important information in different ways regarding any directory contents. Because of this, it is probably one of the most used commands in Unix-like operating systems.

Any directory can contain directories and files of different sizes, recently created/modified, attributes like permissions for being accessed, and, with this command, we can see all this information by size, chronologically, by owner, and/or by many more ways.

In the question, we can accomplish to list that the directory "a" contains its sub-directory "b" and no other entry using the next line of code:

Command-line 1: $\\ ls\; a$ (the command "says": display content of a)

Result: $b$

The result is only the directory b because there is no other entry in it.

To display more information regarding b, we can use the many options available for the command ls, like -a (all entries), -d (only directories), -l (long listing format), and so on, e.g. ls -a A (display all entries in directory A, included hidden files).

6 0

3 years ago

Determine whether the compound condition is True or False. 1 2)

Greeley [361]

Answer:

where is whole question

where is whole questionExplanation:

where is whole questionExplanation:.....,.............

5 0

3 years ago

A connection between files that allows data to be transferred from one file to another is a _______________________.

lisabon 2012 [21]

Answer:

Link

Explanation:

A Link is a term often used in computer application, data, or file management, that allows a user to carry out the operation of transferring data or information from one file to another often referred to as a target.

There are two types of major links, these include Symbolic links and Hard links.

Hence, in this case, A connection between files that allows data to be transferred from one file to another is a LINK

6 0

3 years ago

The pane at the bottom of the PowerPoint window in Normal view, where you can type personal notes about the presentation that th

EleoNora [17]

Note pane is located at the bottom of the PowerPoint window in Normal view.

Microsoft PowerPoint is a powerful slide show presentation program. Microsoft PowerPoint presents you with a presentation and slides app.

The Notes pane is found beneath the slide window in normal view. The note pane is used to create personal notes that the audience would not see or it can also be included in a presentation.

Find out more on note pane at: brainly.com/question/3208144

3 0

2 years ago