MULTIPLE COICE! BRAINLIEST

Suppose that you are asked to modify the Stack class to add a new operation max() that returns the current maximum of the stack

Advocard [28]

Answer:

Following are the code to the given points:

Explanation:

For point 8.1:

public String max()//defining a method max

{

String maxVal=null;//defining a string variable that holds a value

for(int x=0;x<n;x++)

{

if(maxVal==null || a[i].compareTo(maxVal)>0)//defining if blok to comare the value

{

maxVal=a[i];//holding value in maxVal variable

}

return maxVal;//return maxVal variable value

}

For point 8.2:

public void push(String item)//defining a method push that accepts item value in a parameter

{

a[n]=item;//defining an array to hold item value

if(n==0 || item.compareTo(maxVals[n-1])>0)//use if to comare item value

{

maxVals[n]=item;//holding item value in maxVals variable

}

else

{

maxVals[n]=maxVals[n-1];//decreasing the maxVals value

}

n++;//incrementing n value

}

public String pop()//defining a method pop

{

return a[--n];//use return value

}

public String max()//defining a method max

{

return maxVals[n-1];//return max value

}

In the first point, the max method is declared that compares the string and returns its max value.
In the second point, the push, pop, and max method are declared that works with their respective names like insert, remove and find max and after that, they return its value.

7 0

3 years ago

____ variables are variables that are shared by every instantiation of a class. local instance

Colt1911 [192]

These are known as class variables, so called because of the property mentioned.

4 0

3 years ago

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

A group decision-making approach developed by the Rand Corporation for use in situations where group members are unable to meet

Gnoma [55]

Answer:

correct option is B. The Delphi technique

Explanation:

RAND was developed by Delphi method in the 1950 s and initially to predict the impact of technology on the military.

This method involves a group of experts who respond anonymously to questions and subsequently receive an answer as in the form of statistical representation of group response and after that process repeats itself.

As the goal to narrow down the range of responses and get to something close to a consensus agreement and this Delphi method widely adopted and is still relevant today.

so correct option is B. The Delphi technique

4 0

3 years ago

Suppose you are implementing the address book feature for a cellphone. The address book needs to be kept sorted by person’s last

NemiM [27]

Answer:

Sorted linked list

Explanation:

A sorted linked list can be used for sorting the last name and support fast access while queried by the last name.
The hash table cannot be used because it could have a problem if there would be more buckets to handle than the expected.
The binary search table is implemented as the hash table hence both will give the same results.

8 0

3 years ago