import java.util.Scanner
class Question{
private int firstParam
private int secondParam
private String operator
private int answer
private int score
public int getFirstParam() {
return firstParam
}
public void setFirstParam(int firstParam) {
this.firstParam = firstParam
}
public int getSecondParam() {
return secondParam
}
public void setSecondParam(int secondParam) {
this.secondParam = secondParam
}
public String getOperator() {
return operator
}
public void setOperator(String operator) {
this.operator = operator
}
public int getAnswer() {
return answer
}
public void setAnswer(int answer) {
this.answer = answer
}
public int getScore() {
return score
}
public void setScore(int score) {
this.score = score
}
//构造
public Question(int firstParam, int secondParam) {
this.firstParam = firstParam
this.secondParam = secondParam
}
}
public class StudentStudy {
private int questionNumber
private String operator
private Question[] questions
private int rightNumber=0
private int wrongNumber=0
public String getOperator() {
return operator
}
public void setOperator(String operator) {
this.operator = operator
}
public int getQuestionNumber() {
return questionNumber
}
public void setQuestionNumber(int questionNumber) {
this.questionNumber = questionNumber
}
public int getRightNumber() {
return rightNumber
}
public void setRightNumber(int rightNumber) {
this.rightNumber = rightNumber
}
public int getWrongNumber() {
return wrongNumber
}
public void setWrongNumber(int wrongNumber) {
this.wrongNumber = wrongNumber
}
public Question[] getQuestions() {
return questions
}
public void setQuestions(Question[] questions) {
this.questions = questions
}
public int getRandom(){
return (int)(Math.random()*10)
}
public int calculateByOperator(String operator,int first,int second){
switch(operator.charAt(0)){
case '+':
return first+second
case '-':
return first-second
default:
return 0
}
}
public void makeQuestion(){
mywhile:
while(questions[questionNumber-1]==null){
Question question=new Question(getRandom(),getRandom())
for(int i=0questions[i]!=null&&i<questionNumberi++){
if((question.getFirstParam()==questions[i].getFirstParam())&&(question.getSecondParam()==questions[i].getSecondParam())){
continue mywhile
}
}
for(int i=0i<questionNumberi++){
if(questions[i]==null){
questions[i]=question
questions[i].setOperator(operator)
questions[i].setScore(100/questionNumber)
questions[i].setAnswer(calculateByOperator(operator,questions[i].getFirstParam(),questions[i].getSecondParam()))
break
}
}
}
}
public StudentStudy(int questionNumber){
this.questionNumber=questionNumber
questions=new Question[this.questionNumber]
}
public static void main(String[] args){
Scanner input=new Scanner(System.in)
System.out.println("现在开始测试,请填写要测试的试题数量(1-100):")
int number=input.nextInt()
StudentStudy ss=new StudentStudy(number)
System.out.println("请选择要测试的试题类型:1加法2减法")
int type=input.nextInt()
switch(type){
case 1:
ss.setOperator("+")
break
case 2:
ss.setOperator("-")
break
default:
System.out.println("输入有误,退出系统!")
System.exit(0)
}
ss.makeQuestion()
for(int i=0i<numberi++){
System.out.println("第"+(i+1)+"题:"+ss.getQuestions()[i].getFirstParam()+ss.getQuestions()[i].getOperator()+ss.getQuestions()[i].getSecondParam()+"=?")
int answer=input.nextInt()
if(ss.getQuestions()[i].getAnswer()==answer){
ss.setRightNumber(ss.getRightNumber()+1)
System.out.println("回答正确!")
}
else{
ss.setWrongNumber(ss.getWrongNumber()+1)
System.out.println("回答错误!")
}
}
System.out.println("您总共答了"+ss.getQuestionNumber()+"道题,答对"+ss.getRightNumber()+"道,答错"+ss.getWrongNumber()+"道,最后总分为:"+ss.getRightNumber()*100/ss.getQuestionNumber()+"分")
}
}
你好，按照你的要求代码如下睁隐，可以直接运行import java.io.BufferedReader
import java.io.IOException
import java.io.InputStreamReader
public class test {
public static void main(String[] args) {
int count = 0
BufferedReader in = new BufferedReader(new InputStreamReader(System.in))
for (int i = 0i <10i++) {
int a = (int) (Math.random() * 100)
int b = (int) (Math.random() * 100)
int c = (int) (Math.random() * 2)
int r = 0
switch (c) {
case 0:
if (a + b >= 100) {
a = 100 - b
}
System.out.print(a + " + " + b + " = ")
r = a + b
break
case 1:
if (a <b) {
int t = a
a = b
b = t
}
System.out.print(a + " - " + b + " = ")
r = a - b
}
int input
try {
input = Integer.valueOf(in.readLine())
} catch (Exception e1) {
System.out.println("答案错误物仔\n")
continue
}
if (input == r) {
count++
System.out.println("答案正确\n")
} else {
System.out.println("答悉蚂厅案错误\n")
}
}
if (null != in) {
try {
in.close()
} catch (IOException e) {
e.printStackTrace()
}
}
System.out.println("答对数量：" + count + "\n得分: " + count * 10)
}
}
package com.demoimport java.math.BigDecimal
import java.util.Random
import java.util.Scanner
/*
* Java编写一个能够自动生成小朋友算术练习题目的程序。设计一个程序，要求能够随机生成每个题目。
* 编写一个能够自动生成小朋友算术练习题目的程序。设计一个程岁亏则空尘序，要求能够随机生成每个题目，并具有以下基本功能：
* （1）要求题目以单项选择题及填空题两种形式出现。
* （2）完成一题后自动判断答案是否正确，分别d出不同的提示，并自动更新成下一题。
* （3）单击“退出”时，汇总本次计算结果，共完成几题，正确率，并给出相应评乎棚语。确定后正式退出。
*/
public class publicDemo2 {
public static void main(String[] args) {
Random random = new Random()
StringBuilder stringBuilder = new StringBuilder()
String[] symbol = {"+","-","*","/"}
String question_tip = "选择题(除法保留小数点后两位)："
stringBuilder.append(question_tip).append("\n")
System.out.println(question_tip)
int a
int b
String f
String result_str
for (int i=1i<11i++){
a = random.nextInt(50)
b = random.nextInt(50)
f = symbol[random.nextInt(3)]
String question = i+"、"+a+f+b+"="
System.out.println(question)
stringBuilder.append(question)
Scanner sc = new Scanner(System.in)
String sc_str = sc.next()
if("/".equals(f)){
double scan_value = Double.parseDouble(sc_str)
double result_value = a / b
BigDecimal bigDecimal1 = new BigDecimal(scan_value)
scan_value = bigDecimal1.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue()
BigDecimal bigDecimal2 = new BigDecimal(result_value)
result_value = bigDecimal2.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue()
result_str = (scan_value==result_value)?"回答正确！":"回答错误！"
stringBuilder.append(scan_value).append("(答案："+result_value+")"+result_str).append("\n")
}else{
int scan_value = Integer.parseInt(sc_str)
int result_value
if("+".equals(f)){
result_value = a + b
}else if("-".equals(f)){
result_value = a - b
}else if("*".equals(f)){
result_value = a * b
}else{
break
}
result_str = (scan_value==result_value)?"回答正确！":"回答错误！"
stringBuilder.append(scan_value).append("(答案："+result_value+")"+result_str).append("\n")
}
}
System.out.println(stringBuilder.toString())
}
}
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