CS101 – 955

Instructions:

• Solve questions 1 and 2 for points on assignment 5

• Question 3 is a bonus question worth 5 points that I will add to your lowest quiz grade to reach a maximum of 5 points.

• If you use any external resources:
  • Add the reference
  • DO NOT COPY THE CODE

Questions

1. (10 points) Identify and fix the errors in the following code. Hint: there are five errors. (you must show the error and the fix):

1 public class DiscoverErrors {

2              public static void main(String[] args) {

3                             double[100] localArray;

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

6                                             localArray(i) = Math.random * 100;

7             }

8 }

2. (10 points) Use the arraycopy method to copy the array below to a target array The program should then print the values of targetArray. (you must show the code and the output):

int[] sourceArray = {32, 54, 67, 80};

3. (Bonus: 5 points) Write a program for a restaurant that is used to compute the total expenses of the restaurant, their average, maximum expense item, minimum expense item and then prints the results. The program should do the following:

1. Ask the user for the number of expense items they would like to add. Your code should show something as the following:

Please enter the number of expense items: 3

1. Then, it asks the user to enter the expenses each separated by a space. Imagine they are entering them as the cost of a water bill, electricity bill, rent, … so your code should show something similar to the following:

Please enter each expense item separated by space: 10.5 23.6 1009.54

Hint: Uses an array to store the values entered by the user

1. Write a method called printValue that you can reuse to print all the values in steps (e, f, g, and h). The method should take as input a string which is the name of the value to print and a value. An example print statement that you can use inside the method printValue where valueName is a String variable and value is a variable of data type double:

System.out.println(“The “ + valueName + “ is “ + value);

Hint: the method does not return a value, it only prints a message

1. Compute the total cost which is the sum of all elements/expense items and print it using the method printValue

1. Compute the maximum value of an expense item and print it using the method printValue

1. Compute the minimum value of expense items and print it using the method printValue

1. Write a method that returns the average of all expenses. It should take as input: the sum and the number of items. Then, print the average using the method printValue

1. Write a method that prints the expense items in reverse. The method should take as input an array. In other words, using the example values shown in step b, your program should print something as the following:

The items you entered are: 1009.54 23.6 10.5