In java I need help on this specific code for this lab.


Problem 1:


Create a Class named Array2D with two instance methods:


public double[] rowAvg(int[][] array)


This method will receive a 2D array of integers, and will return a 1D array of doubles containing the average per row of the 2D array argument.


The method will adjust automatically to different sizes of rectangular 2D arrays.


Example: Using the following array for testing:


int [][] testArray =

{

{ 1, 2, 3, 4, 6},

{ 6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

must yield the following results:


Averages per row 1 : 3.20

Averages per row 2 : 8.20

Averages per row 3 : 13.20

While using this other array:


double[][] testArray =

{

{1, 2},

{4, 5},

{7, 8},

{3, 4}

};


must yield the following results:


Averages per row 1 : 1.50

Averages per row 2 : 4.50

Averages per row 3 : 7.50

Averages per row 4 : 3.50

public double[] colAvg(int[][] array)


This method will receive a 2D array of integers, and will return a 1D array of doubles containing the average per column of the 2D array argument.


The method will adjust automatically to different sizes of rectangular 2D arrays.


Example: Using the following array for testing:


int [][] testArray =

{

{ 1, 2, 3, 4, 6},

{ 6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

must yield the following results:


Averages per column 1: 6.00

Averages per column 2: 7.00

Averages per column 3: 8.00

Averages per column 4: 9.00

Averages per column 5: 11.00

While using this other array:


double[][] testArray =

{

{1, 2},

{4, 5},

{7, 8},

{3, 4}

};


must yield the following results:


Averages per column 1: 3.75

Averages per column 2: 4.75



My code is:


public class ArrayDemo2dd

{


public static void main(String[] args)

{

int [][] testArray1 =

{

{1, 2, 3, 4, 6},

{6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

int[][] testArray2 =

{

{1, 2 },

{4, 5},

{7, 8},

{3,4}

};


// The outer loop drives through the array row by row

// testArray1.length has the number of rows or the array

for (int row =0; row < testArray1.length; row++)

{

double sum =0;

// The inner loop uses the same row, then traverses all the columns of that row.

// testArray1[row].length has the number of columns of each row.

for(int col =0 ; col < testArray1[row].length; col++)

{

// An accumulator adds all the elements of each row

sum = sum + testArray1[row][col];

}

//The average per row is calculated dividing the total by the number of columns

System.out.println(sum/testArray1[row].length);

}

} // end of main()


}// end of class


However, it says there's an error... I'm not sure how to exactly do this type of code... So from my understanding do we convert it?

Answer:

Explanation:

The following code is written in Java and creates the two methods as requested each returning the desired double[] array with the averages. Both have been tested as seen in the example below and output the correct output as per the example in the question. they simply need to be added to whatever code you want.

public static double[] rowAvg(int[][] array) {

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

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

         double average = 0;

         for (int y = 0; y < array[x].length; y++) {

             average += array[x][y];

         }

         average = average / array[x].length;

         result[x] = average;

     }

     return result;

   }

   public static double[] colAvg(int[][] array) {

       double result[] = new double[array[0].length];

       for (int x = 0; x < array[x].length; x++) {

           double average = 0;

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

               average += array[y][x];

           }

           average = average / array.length;

           result[x] = average;

       }

       return result;

   }

Suppose you have the following search space:

State
next
cost

A
B
4

A
C
1

B
D
3

B
E
8

C
C
0

C
D
2

C
F
6

D
C
2

D
E
4

E
G
2

F
G
8

Draw the state space of this problem.

Assume that the initial state is A and the goal state is G. Show how each of the following search strategies would create a search tree to find a path from the initial state to the goal state:
Breadth-first search
Depth-first search
Uniform cost search

​

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This lab was designed to teach you more about using Scanner to chop up Strings. Lab Description : Take a group of numbers all on the same line and average the numbers. First, total up all of the numbers. Then, take the total and divide that by the number of numbers. Format the average to three decimal places Sample Data : 9 10 5 20 11 22 33 44 55 66 77 4B 52 29 10D 50 29 D 100 90 95 98 100 97 Files Needed :: Average.java AverageRunner.java Sample Output: 9 10 5 20 average = 11.000 11 22 33 44 55 66 77 average = 44.000 48 52 29 100 50 29 average - 51.333 0 average - 0.000 100 90 95 98 100 97 average - 96.667

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For this program, adjust the values by dividing all values by the largest value. The input begins with an integer indicating the number of floating-point values that follow.
Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
print('{:.2f}'.format(your_value))
Ex: If the input is:
5 30.0 50.0 10.0 100.0 65.0
the output is:
0.30 0.50 0.10 1.00 0.65
The 5 indicates that there are five floating-point values in the list, namely 30.0, 50.0, 10.0, 100.0, and 65.0. 100.0 is the largest value in the list, so each value is divided by 100.0.
For coding simplicity, follow every output value by a space, including the last one
1 #include
2 #include
3 #include
4 using namespace std;
5
6 int main() {
7
8 /* Type your code here. */
9
10 return 0;
11 }
12

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Before hard disk drives were available, computer information was stored on:

Floppy Disks

Cassette Tapes

Punch Cards

All of the Above

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examples of pop in computer​

SOMEONE PLS HELP?!?!!

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• Algorithm A solves problems by dividing them into five subproblems of half the size, recursively solving each subproblem, and then combining the solutions in linear time.
• Algorithm B solves problems of size n by recursively solving two subproblems of size n − 1 and then combining the solutions in constant time.
• Algorithm C solves problems of size n by dividing them into nine sub-problems of size n=3, recursively solving each sub-problem, and then combining the solutions in O(n2) time.
What are the running times of each of these algorithms (in big-O notation), and which would you choose?

To add musical notes or change the volume of sound, use blocks from.

i. Control ii. Sound iii. Pen​

Read the 4 entities below and assume that customer_id is the key common to all tables.
Customer: An entity that describes a customer. An instance occurs for unique customers only using name, date of birth, and login name as customer_id primary key.
Online: An entity that describes a customer purchasing activity online. An instance occurs when the customer completes the transaction. Customers can purchase more than once.
Visits: An entity that describes a customer purchase in a physical store. An instance occurs if a customer makes or purchase or checks-in using an app. Customers can visit more than once per day.
Satisfaction: An entity that represents data from a recent customer satisfaction survey. An instance occurs when a customer takes the Survey. A customer is tracked by login name and can only take the survey one time.
Use the information to match the following relationships. Answers can be reused more than once.
1. The relationship between Customer and Online.
2. The relationship between Customer and Satisfaction.
3. The relationship between Online and Visits.
4. The relationship between Visits and Satisfaction
A. prototype
B. one-to-one
C. Zero-sum
D. one-to-many
E. TOO many
F. many-to-many

the
Wnte
that
Program
will accept three
Values of
sides of a triangle
from
User and determine whether Values
carceles, equal atera or sealen
- Outrast of your
a
are for
an​

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Animation timing is does not affect the
speed of the presentation
Select one:
True
False​

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short for coder-decoder
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and fair use?

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