Reference no: EM131936894

1.
create a new Java application called "Scorer" (without the quotation marks) that declares a two-dimensional array of doubles (call it scores) with three rows and three columns and that uses methods and loops as follows.
Use a method containing a nested while loop to get the nine (3 x 3) doubles from the user at the command line.
Use a method containing a nested for loop to compute the average of the doubles in each row.
Use a method to output these three row averages to the command line.

2.
First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects).
Then create a new Java application called "StringSlicer" (without the quotation marks) that uses methods to:

1. Get a String from the user at the command line

2. Populate an ArrayList of Character data (the wrapper class), with each char in the String represented as a separate Character element in the ArrayList

3. Output each Character to the command line, each on a separate line

3.
create a new Java application called "WeightedAvgDropSmallest" (without the quotation marks) according to the following guidelines.
The program prompts the user for five to ten numbers all on one line, separated by spaces, calculates the weighted average of all those numbers except the lowest n numbers, where n and the weight are also given by the user, and displays all the numbers, the weight, the number of lowest numbers dropped, and the calculated average to the user.

The program uses methods to:

1. Get the numbers used to calculate the average

2. Get the number of lowest numbers to drop before calculating the average

3. Get the weight, a double greater than 0 and less than or equal to 1

4. Calculate the weighted average of the numbers (except the lowest n numbers) entered by the user

5. Print the results

The first method should take no arguments and return an array list of doubles.

The second method should take no arguments and return a single integer, the number of the lowest numbers to drop before calculating the average.

The third method should take no arguments and return a double (the weight)

The fourth method should take three arguments: an array list of numbers (the return value of the first method above); an integer (the number of smallest items to drop before calculating the average); and a double (the weight). This method should return a double (the weighted average of all the numbers except the lowest n values).

The fifth method should take four arguments: an array list of numbers (the return value of the first method above); an integer (the number of smallest numbers to drop before calculating the average); a double (the weight); and a double (the weighted average returned from the fourth method above). This method should have no return value.

For example:
If the user gives these numbers for calculating the average:
40 60 80 100 20

and the user gives the number 2 to indicate how many of the lowest values should be dropped before calculating the average, and gives a weight of 0.5, then the program should give as output:

The weighted average of the numbers is 40.0, when using the data 40.0, 60.0, 80.0, 100.0, 20.0, where 0.5 is the weight used, and the average is computed after dropping the lowest 2 values.