Sales Analysis
The file SalesData.txt, in this chapter’s source code folder, contains the dollar amount of sales that a retail store made each day for a number of weeks. Each line in the file contains seven numbers, which are the sales numbers for one week. The numbers are separated by a comma. The following line is an example from the file:
2541.36, 2965.88, 1965.32, 1845.23, 7021.11, 9652.74, 1469.36
Write a
- The total sales for each week
- The average daily sales for each week
- The total sales for all of the weeks
- The average weekly sales
- The week number that had the highest amount of sales
- The week number that had the lowest amount of sales
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Chapter 9 Solutions
Starting Out With Java: From Control Structures Through Objects, Student Value Edition (7th Edition)
Additional Engineering Textbook Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Programming in C
Database Concepts (8th Edition)
Web Development and Design Foundations with HTML5 (8th Edition)
Software Engineering (10th Edition)
- Fleet class: Instance Variables An array that stores Aircraft that represents Delta Airlines entire fleet A variable that represents the count for the number of aircraft in the fleet Methods: o Constructor-One constructor that instantiates the array and sets the count to aero readFile()-This method accepts a string that represents the name of the file to be read. It will then read the file. Once the data is read, it should create an aircraft and then pass the vehicle to the addAircraft method. It should not allow any duplication of records. Be sure to handle all exceptions. o writeFile()-This method accepts a string that represents the name of the file to be written to and then writes the contents of the array to a file. This method should call a sort method to sort the amay before writing to it. sortArray()-This method returns a sorted array. The array is sorted by registration number.u addAircraft- This method accepts an aircraft and adds it to the fleet(the array only if it is not…arrow_forwardAssignment 5C: Level Map Creator. There are a variety of ways that game developers store their level layouts. One simple method is to associate level elements with certain symbols, and then storing them in a 2D grid inside a text file. We will use our knowledge of 2D arrays to create a very simple Level Map Creator tool. The program should prompt the user to enter a width and height for the level. Then it should initialize a 2D array and fill every element with the "*" symbol. Afterwards, the user should be given the following options via a menu: 1. Clear Level Re-initialize the 2D array and fill every element with the "*" symbol. 2. Add Platform Prompt the user to enter a starting point and length for the horizontal platform. Replace those elements in the 2D array with the "=" symbol. If the length is longer than the number of columns (or out of bounds), notify the user that this is not possible. 3. Add Item Prompt the user to enter a column and row index. Replace that element in the…arrow_forwardManhattan skyline def manhattan_skyline(towers):This classic problem in computational geometry (essentially, geometry that can be done using only integer arithmetic; yes, that is an actual thing) is best illustrated by pictures and animations such as those on the page "The Skyline problem", so you can first check that it out to get an idea of what is going on. Given a list of rectangular towers as tuples (s, e, h) where s and e are the start and end x-coordinates (satisfying e>s) and h is the height of that tower, compute and return the total visible area of the towers, being careful not to double count two or more towers that are partially overlapping. All towers share the same flat ground baseline at the height. The classic solution illustrates the important sweep line technique that starts by creating a list of precisely those x-coordinate values where something relevant to the problem takes place. In this problem, the relevant x-coordinates are those where some tower either…arrow_forward
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- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTEBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT