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java Write methods for 2d 1. a method to calculate the sum of a 2d double...
JAVA Write a method that returns the sum of all the elements in a specified column in a matrix using the following header: public static double sumColumn(double [][] m, int columnIndex) Write another method that returns the sum of all the elements in a specified row in a matrix using the following header: public static double sumRow( double [][] m, int rowIndex) Write a test program that reads a 3-by-4 matrix and displays the sum of each column and sum...
//please help
I can’t figure out how to print and can’t get the random numbers to
print. Please help, I have the prompt attached. Thanks
import java.util.*;
public
class
Test
{
/**
Main method */
public
static
void main(String[]
args)
{
double[][]
matrix
=
getMatrix();
//
Display the sum of each column
for
(int
col
= 0;
col
<
matrix[0].length;
col++)
{
System.out.println(
"Sum
" + col
+
" is
" +
sumColumn(matrix,
col));
}
}
/**
getMatrix initializes an...
Create a class called Lab7b and in it implement all of the methods below. Also, write a main method with test calls to all of these methods. Don’t forget to turn in your file to Canvas before the end of the lab today. int[][] random(int N, int start, int end) returns an N-by-N matrix of random integers ranging from start to end; int rowSum(int[][] a, int i) returns the sum of the elements in row i of the 2-D array...
Java Programming Assignment
Write a class named 2DArrayOperations with the following static
methods:
getTotal . This method should accept a
two-dimensional array as its argument and return the total of all
the values in the array. Write overloaded versions of this method
that work with int , double , and long arrays.
(A)
getAverage . This method should accept a
two-dimensional array as its argument and return the average of all
the values in the array. Write overloaded versions of...
Write a Java program that does the following. a. Declare an integer 2D array with 5 rows and 5 columns. b. Initialize the array's elements to random integers between 1 and 10 (inclusive). c. Display all the elements in the 2D array as a table of rows and columns. d. Display the row index and column index of all the even integers in the 2D array. e. Display the sum of first row's elements.
Write a method that takes in a two-dimensional array of integers, do some calculation for each row in the two-dimensional array, and returns a one-dimensional array of sums for each row. Your code must work any array dimensions, including jagged arrays. The calculations are: • Sum of each row • Maximum value of each row • Minimum value of each row • Average of each row Here is an example an array passed and returns an array of sums for...
Need help with a few questions! Using the JAVA language please. 1) exercises - branching Write a method whatToWear(int temp) that takes a temperature and then outputs a string for what to wear in different weather conditions. There must be at least 3 categories. For example, whatToWear(90) might return “shorts” and whatToWear(30) might return “down coat” 2) Enum exercise • Define an enum Seasons, and rewrite the whatToWear method to use enums and switch statement 8) 2D array exercise 1....
This is for Java. Create ONE method/function that will return an array containing the row and column of the largest integer i the 2D array. If the largest number is located on row 2, column 1, the method needs to return row 2 and column one. Do not use more than one method. Use the code below as the main. Please comment any changes. in java Given the main, create a method that RETURNS the largest number found in the...
Use C++ (2D Array) Write a program which: 1. Assigns data given below into the 2D array of integers which is 10x10. 2. Prints out the contents of the 2D array after assigning the data to make sure correct data was assigned. 3. Figures out and prints out the square root of the sum of ALL the elements in the 2D array. 4. Figures out and prints out the average of ALL THE ELEMENTS in the 2D array. 5. Figures...
Write a Java program that calculates the sum of a variable sized matrix using a two dimensional array. (ArraySum.java) The user should provide the number of rows and columns Test multiple user inputs (3 times 2, 4 times 4, 6 times 2, etc) A sum should be created for each row, each column, and the total for the matrix Ex.: How big would you like your matrix? Rows - ? 3 Columns -? 2 Please enter your row 1? Column...