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April 29, 2018 00:58
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| // Lab 2 – Week 2 | |
| /* Lab2LoopsArrays2.java | |
| * Author: Derek Christensen | |
| * Date: 20180425 | |
| */ | |
| /** Lab2LoopsArrays2.java | |
| PART 1: | |
| Store and analyze Exam Scores, including: | |
| - input | |
| - correctness of entries | |
| - AVG, MIN, MAX | |
| - output | |
| by using: | |
| - Arrays | |
| - Loops | |
| - number formatting | |
| - error checking & messaging | |
| PART 2: | |
| Expand PART 1 to include multiple class sections: | |
| - include use of a sentinel | |
| - inner and outer loops | |
| */ | |
| import java.util.*; // required to use Scanner and Random classes | |
| import java.util.Scanner; | |
| import java.text.DecimalFormat; //required to use DecimalFormat class | |
| public class Lab2LoopsArrays2 { | |
| public static void main(String[] args) { | |
| // TODO Auto-generated method stub | |
| Scanner s = new Scanner (System.in); | |
| int[] scores = new int[50]; | |
| String input = "SECTION"; | |
| char section = 'Z'; | |
| char enterAnother = 'Y'; | |
| int totalClass = 0; | |
| int lowClass = 100, highClass = 0; | |
| double averageSection; | |
| double averageClass; | |
| DecimalFormat df = new DecimalFormat("#,##0.00"); | |
| System.out.println("How many scores to you need to enter for all Sections combined? "); | |
| int number = s.nextInt(); | |
| scores = new int[number]; | |
| // Read in defined number of scores using the 'length' | |
| // data property to control the loop | |
| int indexClass = 0; | |
| do // Iterate thru Sections | |
| { | |
| System.out.println("\nEnter Section Letter (A, B, C, etc.): "); | |
| s.nextLine(); | |
| s.nextLine(); | |
| input = (s.nextLine()).toUpperCase(); | |
| section = input.charAt(0); | |
| int indexSection = 0, totalSection = 0; | |
| int lowSection = 100, highSection = 0; | |
| int temp = -1; | |
| System.out.println("Enter up to " + | |
| (scores.length - indexClass) + | |
| " scores or 999 to end:"); | |
| do // Iterate thru Section Scores | |
| { | |
| temp = s.nextInt(); | |
| if (temp != 999) { | |
| while (temp < 0 || temp > 100) { | |
| System.out.println("Score must be a number from 0 to 100."); | |
| temp = s.nextInt(); | |
| } // end while | |
| scores[indexClass] = temp; | |
| totalSection += temp; | |
| totalClass += temp; | |
| if (temp < lowSection) | |
| lowSection = temp; | |
| if (temp > highSection) | |
| highSection = temp; | |
| if (temp < lowClass) | |
| lowClass = temp; | |
| if (temp > highClass) | |
| highClass = temp; | |
| indexSection++; | |
| indexClass++; | |
| } // end if | |
| } while (indexClass < scores.length && temp != 999); //end while | |
| averageSection = (double)totalSection/indexSection; | |
| System.out.println("\nSection " + section + " results: "); | |
| System.out.println("Sum of scores: " + totalSection); | |
| System.out.println("Numer of scores: " + indexSection); | |
| System.out.println("High score: " + highSection); | |
| System.out.println("Low Score: " + lowSection); | |
| System.out.print("Average score: " + df.format(averageSection) + "\n"); | |
| System.out.print("\nDo you want to enter another section? (Y)es or (N)o: "); | |
| s.nextLine(); | |
| String response = (s.nextLine()).toUpperCase(); | |
| enterAnother = response.charAt(0); | |
| } while (indexClass < scores.length && enterAnother == 'Y'); //end while | |
| for (int score : scores) { | |
| System.out.print(score + " "); | |
| } // end for | |
| averageClass = (double)totalClass/scores.length; | |
| System.out.println("\n\nClass results: "); | |
| System.out.println("Sum of scores: " + totalClass); | |
| System.out.println("Numer of scores via index: " + indexClass); | |
| System.out.println("Numer of scores via array length: " + scores.length); | |
| System.out.println("Class High = " + highClass); | |
| System.out.println("Class Low = " + lowClass); | |
| System.out.println("Class Average = " + df.format(averageClass)); | |
| } // end main | |
| } // end class |
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