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[交流] 能帮我解决小学生测验编程不？已有12人参与

能帮我看看这个编程题不？谢谢啦

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1楼 2017-05-18 17:53:02

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lbstorm

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jjdg: 金币+2, 辛苦了 2017-05-19 22:34:14

//一共三个java类。写得不好，不足的地方欢迎指正。
// 1.
package com.test.muchong.pupil;

import java.util.Scanner;

/**
* Created by Lieber on 2017/5/19.
*/
public class Check {
public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      int totalScore = 0;
      int questions = 10;
      int answer = 0;

      for (int i = 0; i < questions; i++) {
         int times = 3;
         Question question = new Question();
         DisplayResult.showEquation(question.getEquation());
         DisplayResult.showInput();
         answer = scanner.nextInt();
         boolean flag = false;
         while (! flag) {
            if (times <=3 && times > 1) {
                  flag = question.check(answer);
                  if (!flag) {
                     times--;
                     DisplayResult.showError(times);
                     answer = scanner.nextInt();
                  }
            } else {
                  DisplayResult.showRightAnswer(question.getResult());
                  break;
            }
         }
         totalScore += Check.score(times);

      }
      DisplayResult.showTotalScore(totalScore);

}

public static int score(int sco) {
      int result = 0;
      switch (sco) {
         case 3:
            result = 10;
            break;
         case 2:
            result = 7;
            break;
         case 1:
            result = 5;
            break;
         default:
            result = 0;
            break;
      }
      return result;
}
}

//2.
package com.test.muchong.pupil;

import java.util.Random;

/**
* Created by Lieber on 2017/5/19.
*
* 每一道题：
* 1，生成公式。
* 2，接受输入
* 3，检查结果
* 4，
*/

public class Question {
private int numberOne;
private int numberTwo;
private enum  Symbol { plus, minus};
private int result;

private static Random random = new Random();
private Symbol symbol;

/**
   * 生成随机整数（0至50）
   * @return int
   */
public int getRandomNumber() {
      int number = Math.abs(random.nextInt() % 50);
      return number;
}

public void setRandomSymbol() {
      this.symbol = Question.getRandomEnum(Symbol.class);
}

/**
   * 生成随机数
   */
public void init() {
      numberOne = getRandomNumber();
      numberTwo = getRandomNumber();
}

public String getEquation() {
      boolean flag = true;
      while (flag) {
         init();
         setRandomSymbol();
         if (symbol.equals(Symbol.plus)) {
            this.result = numberOne + numberTwo;
            if (result > 50) {
                  flag = true;
            } else {
                  flag = false;
            }
         } else {
            this.result = numberOne - numberTwo;
            if ( result> 0 && result < 50) {
                  flag = false;
            } else {
                  flag = true;
            }
         }
      }
      return getString();
}

/**
   * 获取公式的表达式
   * @return String
   */
public String getString() {
      if (symbol.equals(Symbol.plus)) {
         String temp = numberOne + " + " + numberTwo + " = ";
         return temp;
      } else {
         String temp = numberOne + " - " + numberTwo + " = ";
         return temp;
      }
}

/**
   * 生成随机符 +号或-号
   */
public static <T extends Enum<?>> T getRandomEnum(Class<T> clazz) {
      int x = random.nextInt(clazz.getEnumConstants().length);
      return clazz.getEnumConstants()[x];
}

/**
   * 获取正确答案
   * @return
   */
public int getResult() {
      return this.result;
}

/**
   * 检查输入
   * @param answer
   * @return
   */
public boolean check(int answer) {
      if (answer == result) {
         return true;
      } else {
         return false;
      }
}
}

//3.

package com.test.muchong.pupil;

/**
* Created by Lieber on 2017/5/19.
*
* 显示输出结果：
* 1，输出错误时，提示重新输入
* 2，三次机会用完，给出正确答案
* 3，总分输出。
*/
public class DisplayResult {

public static void showError(int times) {
         System.out.println("You have given a wrong answer," +
                  "please try again(You have )" + times + " times left:"

;
}

public static void showRightAnswer(int result) {
      System.out.println("The right answer is : " + result);
}

public static void showTotalScore(int total) {
      if (total > 90) {
         System.out.println("SMART!"

;
} else if (total > 80 && total < 90) {
System.out.println("GOOD!"

;
} else if (total < 80 && total > 70) {
System.out.println("OK"

;
} else if (total < 70 && total > 60){
System.out.println("PASS"

;
} else {
System.out.println("TRY AGAIN"

;
}
}

public static void showInput() {
System.out.println("Please input the answer: "

;
}

public static void showEquation(String equation) {
System.out.println(equation);
}
}