编写一个算术测试小软件，用来训练小学生的算术能力。程序由3个类组成，其中Teacher类对象负责给出算术

import java.awt.*;

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import javax.swing.*;

import java.awt.event.*;

public class Teacher {

int numberOne,numberTwo;

String operator="";

boolean right;

public int giveNumberOne(int n){

numberOne=(int)(Math.random()*n)+1;

return numberOne;

}

public int giveNumberTwo(int n){

numberTwo=(int)(Math.random()*n)+1;

return numberTwo;

}

public String giveOperator(){

double d=Math.random();

if(d=0.8)

operator="+";

else if(d0.8d0.5)

operator="-";

else if(d=0.5d0.2)

operator="*";

else if(d=0.2)

operator="/";

return operator;

}

public boolean getRight(int answer){

if(operator.equals("+")){

if(answer==numberOne+numberTwo)

right=true;

else

right=false;

}

else if(operator.equals("-")){

if(answer==numberOne-numberTwo)

right=true;

else

right=false;

}

else if(operator.equals("*")){

if(answer==numberOne*numberTwo)

right=true;

else

right=false;

}

else if(operator.equals("/")){

if(answer==numberOne/numberTwo)

right=true;

else

right=false;

}

return right;

}

}

public class ComputerJFrame extends JFrame implements ActionListener{

TextField textOne,textTwo,textResult;

Button getProblem,giveAnswer;

Label operatorLabel,message;

Teacher teacher;

ComputerJFrame(String s){

super(s);

teacher = new Teacher();

setLayout(new FlowLayout());

textOne = new TextField(10);

textTwo = new TextField(10);

textResult = new TextField(10);

operatorLabel = new Label("+");

message = new Label("你还没有回答呢");

getProblem = new Button("获取题目");

giveAnswer = new Button("确认答案");

add(getProblem);

add(textOne);

add(operatorLabel);

add(textTwo);

add(new Label("="));

add(textResult);

add(giveAnswer);

add(message);

textResult.requestFocus();

textOne.setEditable(false);//该方法设置文本框的可编辑性

textTwo.setEditable(false);

getProblem.addActionListener(this);//创建监视器

giveAnswer.addActionListener(this);

textResult.addActionListener(this);

setBounds(100,100,450,100);//设置出现屏幕上时的初始位置

setLocationRelativeTo(null);//居中

setVisible(true);//窗口的可见性

validate();

addWindowFocusListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

}

);

}

public void actionPerformed(ActionEvent e){

if(e.getSource()==getProblem){

int number1 = teacher.giveNumberOne(100);

int number2 = teacher.giveNumberTwo(100);

String operator = teacher.giveOperator();

textOne.setText(""+number1);//设置文本框中为参数字符串指定的文本

textTwo.setText(""+number2);

operatorLabel.setText(operator);

message.setText("请回答");

textResult.setText(null);

}

if(e.getSource()==giveAnswer){

String answer = textResult.getText();

try{ int result = Integer.parseInt(answer);

if(teacher.getRight(result)==true){

message.setText("你回答正确");

}

else{

message.setText("你回答错误");

}

}

catch(NumberFormatException ex){

message.setText("请输入数字字符");

}

}

textResult.requestFocus();

validate();

}

}

public class MainClass {

public static void main(String[] args) {

ComputerJFrame frame;

frame = new ComputerJFrame("算术测试");

}

}

JAVA 算术运算测试

import java.util.Random;

import java.util.Scanner;

public class TestRandom {

public static void main(String[] args) {

Random rand = new Random();

Scanner input = new Scanner(System.in);

while(true){

int a = rand.nextInt(100);

int b = rand.nextInt(100);

int result = a+b;

System.out.println(a+"+"+b+"=?");

int  yourGuess=input.nextInt(); 

if(yourGuess == result){

System.out.println("you are right");

}else {

System.out.println("you are wrong");

}

}

}

}

java课程设计“小学算术运算测试程序”

花了好几个小时,测试通过,希望楼主多给点分

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=0;questions[i]!=nulliquestionNumber;i++){

if((question.getFirstParam()==questions[i].getFirstParam())(question.getSecondParam()==questions[i].getSecondParam())){

continue mywhile;

}

}

for(int i=0;iquestionNumber;i++){

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=0;inumber;i++){

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");

}

}

用Java设计一个小学算术运算测试软件

你的想法是好的，但是我仔细构思了一遍，太难了。

首先难点就是怎么生成题目。也是最难得，因为有太多不确定，弄不好就会出现负数结果的题目。

然后是题目的解答，这个难点就不说了，这个我在几年前就写好了。一直没用上，现在却用上了。

还有，你要窗体，可是我不会用swing

还有你要的四则混合运算是多长的，我总不能写一个有1000多个数字写成的式子吧。

题目中是否涉及到小数

下面是我的计算代码：

package compute;

public class CaculateString {

private String str, s;

private int p1, p2;

public CaculateString(String str) {

this.str = str;

this.clear();

this.check();

}

public String caculate() {

while (isEnd(str)) {

p2 = str.indexOf(")");

if (p2 != -1) {

s = str.substring(0, p2);

p1 = s.lastIndexOf("(");

s = str.substring(p1 + 1, p2);

if (!s.equals("")) {

s = this.caculateNumber(s);

if (p2 == (str.length() - 1))

str = str.substring(0, p1) + s;

else

str = str.substring(0, p1) + s + str.substring(p2 + 1);

} else {

str = str.substring(0, p1) + str.substring(p2 + 1);

}

} else

str = this.caculateNumber(str);

}

return str;

}

private String caculateNumber(String ss) {

int p3 = 0, p4 = 0, p5 = 0;

char b = ' ', c = ' ';

String s1 = null, s2 = null;

double d1 = 0.0, d2 = 0.0, d3 = 0.0;

if (ss.charAt(0) == '+') {

ss = ss.substring(1);

if (ss.indexOf("+") == -1 ss.indexOf("-") == -1

ss.indexOf("*") == -1 ss.indexOf("/") == -1)

return ss;

} else if (ss.charAt(0) == '-') {

if (ss.indexOf("+", 1) == -1 ss.indexOf("-", 1) == -1

ss.indexOf("*", 1) == -1 ss.indexOf("/", 1) == -1)

return ss;

}

while (isEnd2(ss)) {

p3 = 0;

p4 = 0;

p5 = 0;

if (ss.indexOf("*") == -1 ss.indexOf("/") == -1) {

for (int i = 0; i ss.length(); i++) {

b = ss.charAt(i);

if (b == '+' || b == '-') {

if (p3 == 0 i != 0) {

p3 = i;

c = b;

} else if (p3 != 0 i != (p3 + 1)) {

p4 = i;

break;

}

}

}

if (p4 == 0) {

s1 = ss.substring(0, p3);

s2 = ss.substring(p3 + 1);

} else {

s1 = ss.substring(0, p3);

s2 = ss.substring(p3 + 1, p4);

}

d1 = Double.parseDouble(s1);

d2 = Double.parseDouble(s2);

if (c == '+')

d3 = d1 + d2;

else if (c == '-')

d3 = d1 - d2;

if (p4 == 0)

ss = new Double(d3).toString();

else

ss = new Double(d3).toString() + ss.substring(p4);

} else {

if (ss.indexOf("*") == -1) {

c = '/';

p4 = ss.indexOf("/");

} else if (ss.indexOf("/") == -1) {

c = '*';

p4 = ss.indexOf("*");

} else if (ss.indexOf("*") ss.indexOf("/")) {

c = '/';

p4 = ss.indexOf("/");

} else if (ss.indexOf("*") ss.indexOf("/")) {

c = '*';

p4 = ss.indexOf("*");

}

for (int i = p4 - 1; i = 0; i--) {

b = ss.charAt(i);

if (b == '+' || b == '-') {

if ((i - 1) != 0 ss.charAt(i - 1) != '+'

ss.charAt(i - 1) != '-') {

p3 = i;

break;

} else if ((i - 1) != 0

(ss.charAt(i - 1) == '+' || ss.charAt(i - 1) == '-')) {

p3 = i - 1;

break;

}

}

}

for (int i = p4 + 1; i ss.length(); i++) {

b = ss.charAt(i);

if ((b == '+' || b == '-' || b == '*' || b == '/')

(i - 1) != p4) {

p5 = i;

break;

}

}

if (p3 == 0)

s1 = ss.substring(0, p4);

else

s1 = ss.substring(p3 + 1, p4);

if (p5 == 0)

s2 = ss.substring(p4 + 1);

else

s2 = ss.substring(p4 + 1, p5);

d1 = Double.parseDouble(s1);

d2 = Double.parseDouble(s2);

if (c == '*')

d3 = d1 * d2;

else if (c == '/')

d3 = d1 / d2;

if (p3 == 0 p5 == 0)

ss = new Double(d3).toString();

else if (p3 == 0 p5 != 0)

ss = new Double(d3).toString() + ss.substring(p5);

else if (p3 != 0 p5 == 0)

ss = ss.substring(0, p3 + 1) + new Double(d3).toString();

else if (p3 != 0 p5 != 0)

ss = ss.substring(0, p3 + 1) + new Double(d3).toString()

+ ss.substring(p5);

}

}

return ss;

}

private boolean isEnd(String str) {

if (str.indexOf("(") != -1 || str.indexOf(")") != -1

|| str.indexOf("+", 1) != -1 || str.indexOf("-", 1) != -1

|| str.indexOf("*", 1) != -1 || str.indexOf("/", 1) != -1)

return true;

return false;

}

private boolean isEnd2(String ss) {

if (ss.indexOf("+", 1) != -1 || ss.indexOf("-", 1) != -1

|| ss.indexOf("*", 1) != -1 || ss.indexOf("/", 1) != -1)

return true;

return false;

}

private void clear() {

str = str.replaceAll(" ", "");

}

private void check() {

int right = 0, left = 0;

for (int i = 0; i str.length(); i++) {

char a = str.charAt(i);

if (a != '0' a != '1' a != '2' a != '3' a != '4'

a != '5' a != '6' a != '7' a != '8' a != '9'

a != '+' a != '-' a != '*' a != '/' a != '('

a != ')' a != '.') {

System.exit(0);

}

if (a == '(')

left++;

else if (a == ')')

right++;

}

if (left != right) {

System.exit(0);

}

}

public static void main(String args[]) {

System.out.println(new CaculateString("((1-(0/3))*7)+8").caculate());

}

}

用java编写程序 课题：算术运算测试

你好，按照你的要求代码如下，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 = 0; i 10; i++) {

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\n");

continue;

}

if (input == r) {

count++;

System.out.println("答案正确\n");

} else {

System.out.println("答案错误\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);

}

}

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