根据Java中的表分配成绩

Question

我一直在做的这项功课是要求用户输入他们的考试成绩和家庭作业成绩，然后使用此表为他们分配成绩：

我们还没有学过数组，到目前为止只有基本循环。有没有办法使用for或while循环而不是几十个if语句？这就是我到目前为止所做的：

import java.util.Scanner;

public class GradeCalculator {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner scanner = new Scanner(System.in);
    int numberOfAssignments = 7;
    int numberOfLabs = 16 ;
    int totalAssignmentScore;
    int totalLabScore;
    int totalTestScore = 0;
    int totalHomeworkScore = 0;
    int zyante;
    int attendance;
    int midterm1;
    int midterm2;
    int finalTest;
    int quizScore;
    int pat;


    for (int i = 1; i < numberOfAssignments; i++) {
        System.out.println("Enter your score obtained in Assignment No."+ i + ":");
        totalAssignmentScore = scanner.nextInt();
        {
            totalHomeworkScore += totalAssignmentScore;
            System.out.println(totalHomeworkScore);
        }

    }
    for (int i = 1; i < numberOfLabs; i++) {
        System.out
                .println("Enter your score obtained in Lab No." + i + ":");
        totalLabScore = scanner.nextInt();
        {
            totalHomeworkScore += totalLabScore;
            System.out.println(totalHomeworkScore);
        }
    }
    System.out.println("Enter your score obtained in Zyante: ");
    zyante = scanner.nextInt();
    totalHomeworkScore +=zyante;

    System.out.println("Enter your total score obtained in Attendance: ");
    attendance = scanner.nextInt();
    totalHomeworkScore += attendance;

    System.out.println("Enter your Midterm no. 1 score: ");
    midterm1 = scanner.nextInt();
    totalTestScore += midterm1;

    System.out.println("Enter your Midterm no. 2 score: ");
    midterm2 = scanner.nextInt();
    totalTestScore += midterm2;

    System.out.println("Enter your Final exam score: ");
    finalTest = scanner.nextInt();
    totalHomeworkScore += finalTest;

    System.out.println("Enter your total score in the in-class Quizzes: ");
    quizScore = scanner.nextInt();
    totalHomeworkScore += quizScore;

    System.out.println("Enter your score for PAT: ");
    pat = scanner.nextInt();
    totalHomeworkScore += pat;


    System.out.println("Your total test score is: " + totalTestScore );
    System.out.println("your total homework score is: " + totalHomeworkScore);





}
}

Answer 1

如果您真的不应该使用数组，那么您只需要分析数组并从中提取逻辑。

从以下内容开始：

enum Grade {
  P,
  A,
  G;
}

public Grade score ( int tests, int homework ) {
  if ( homework <= 599
          || tests <= 149 ) {
    return Grade.P;
  }
  return Grade.G;
}

然后剥离更多：

public Grade score ( int tests, int homework ) {
  if ( homework <= 599
          || tests <= 149 
          || (homework <= 719 && tests <= 179 )) {
    return Grade.P;
  }
  return Grade.G;
}

你有：

等等，直到您详细说明了所有数据。

组织你的if语句有更简单的方法，以及更多逻辑方法来剥离表的各个部分，但基本上，没有数组或实际算法，这实际上是可能的。