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Arithmetic.java
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372 lines (349 loc) · 10.2 KB
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package UI_practice;
public class Arithmetic {
static String num = "";
public static void main(String[] args){
//答题界面
JFrame f=new JFrame();
f.setTitle("四则混合运算");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setExtendedState(JFrame.MAXIMIZED_BOTH);
f.setVisible(true);
//设置窗口的大小和位置
f.setSize(400,400);
f.setLocation(400,100);
f.setLayout(null);
Container con=f.getContentPane();//生成一个容器
con.setLayout(new GridLayout(2,1));
//从UI界面接收本次出题的数量
JPanel pan1=new JPanel();
JLabel name1=new JLabel("请输入本次出题数量：");
pan1.add(name1);
JTextField nameTest1=new JTextField(15);
nameTest1.setBounds(500, 100, 880, 100);
// nameTest2.setPreferredSize(new Dimension(180,100));
pan1.add(nameTest1);
pan1.setBounds( 100,500, 200, 120);
con.add(pan1);
JPanel pan2 = new JPanel();
JButton b_log=new JButton("确定");
b_log.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
num = nameTest1.getText();
exercise();
}
});
pan2.add(b_log);
con.add(pan2);
//creatArith();//产生运算式
//exercise();
}
//定义全局的分数
static int score=0;
//定义全局的value结果0
static float currValue;
//定义全局运算式的字符串
static String currString;
//定义全局时间
static String currTime;
//定义全局题目数
static int currNums=0;
/**1.在线答题界面**/
public static void exercise(){
JFrame f=new JFrame();
f.setTitle("四则混合运算");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setExtendedState(JFrame.MAXIMIZED_BOTH);
f.setVisible(true);
//设置窗口的大小和位置
f.setSize(600,500);
f.setLocation(400,100);
f.setLayout(null);
JPanel pan1=new JPanel();
JLabel name1=new JLabel("36/4+19=");
pan1.add(name1);
JTextField nameTest1=new JTextField(15);
nameTest1.setBounds(10, 10, 180, 100);
// nameTest1.setPreferredSize(new Dimension(180,100));
pan1.add(nameTest1);
pan1.setBounds(10, 10, 200, 120);
f.add(pan1);
JPanel pan2=new JPanel();
JButton name2=new JButton("下一题");
pan2.add(name2);
pan2.setBounds( 200,20, 200, 200);
f.add(pan2);
name2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
num = nameTest1.getText();
creatArith();
}
});
pan2.add(name2);
JPanel pan3=new JPanel();
pan3.setLayout(null);
JTextField nameTest3=new JTextField(15);
nameTest3.setBounds(10, 60, 480, 200);
nameTest3.setPreferredSize(new Dimension(300,100));
pan3.add(nameTest3);
pan3.setBounds( 10,60, 500, 220);
f.add(pan3);
JPanel pan4 = new JPanel();
// pan4.setLayout(null);
JButton btnStart=new JButton("开始");
btnStart.setBounds(30, 300,30, 30);
btnStart.setPreferredSize(new Dimension(100,80));
btnStart.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
Map<String,Float> map=new HashMap<String,Float>();
creatArith();
Set set=map.keySet();
Iterator iter = set.iterator();
String key = (String) iter.next();
float value=map.get(key);
if(btnStart.getText().equals("开始")){
currNums+=1;
btnStart.setText("暂停");
name1.setText(key);
System.out.println("value:"+value);
currValue=value;
currString=key;
map.clear();
}else{
btnStart.setText("开始");
nameTest1.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
//按回车键执行相应操作;
if(e.getKeyChar()==KeyEvent.VK_ENTER ){
String answerStr=nameTest1.getText();
float answer=Float.parseFloat(answerStr);
//判断正误，进行加分，并显示
System.out.println("answer:"+answer);
System.out.println("value:"+currValue);
if(answer==currValue){
score+=10;
nameTest3.setFont(new Font("宋体", Font.PLAIN, 20));
nameTest3.setText("本题为:"+currString+""+currValue+" || 您的回答正确 || 当前分数:"+score);
nameTest1.setText("");
}else{
nameTest3.setFont(new Font("宋体", Font.PLAIN, 20));
nameTest3.setText("本题为:"+currString+""+currValue+" || 您的回答错误 || 当前分数:"+score);
}
}
};
});
}
}
});
pan4.add(btnStart);
pan4.setBounds(40, 350, 110, 90);
f.add(pan4);
/*JPanel pan5 = new JPanel();
// pan4.setLayout(null);
JButton btnStart1=new JButton("计时");
btnStart1.setBounds(30, 300,30, 30);
btnStart1.setPreferredSize(new Dimension(100,80));
btnStart1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(btnStart1.getText().equals("计时")){
btnStart1.setText("正在计时...");
nameTest3.setFont(new Font("宋体", Font.PLAIN, 20));
nameTest3.setText(" 计时开始，请认真答题");
//获取当前时间
SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
currTime=df.format(new Date());
}
}
});
pan5.add(btnStart1);
pan5.setBounds(190, 350, 110, 90);
f.add(pan5);*/
JPanel pan6 = new JPanel();
// pan4.setLayout(null);
JButton btnStart2=new JButton("结束");
btnStart2.setBounds(30, 300,30, 30);
btnStart2.setPreferredSize(new Dimension(100,80));
btnStart2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//计算用时
SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String endTime=df.format(new Date());
try {
long start =df.parse(currTime).getTime();
long end=df.parse(endTime).getTime();
int minutes = (int) ((end - start)/(1000 ));
nameTest3.setFont(new Font("宋体", Font.PLAIN, 20));
nameTest3.setText("时间:"+minutes+"秒 ||"+" 一共计算了"+currNums+"道题 || 总得分:"+score);
} catch (ParseException e1) {
e1.printStackTrace();
}
}
});
pan6.add(btnStart2);
pan6.setBounds(340, 350, 110, 90);
f.add(pan6);
}
//产生随机数
public static int getNumber(){
int number = 0;
Random num = new Random();
number = num.nextInt(100)+1;
return number;
}
//随机产生运算符号
public static char getOperator(){
char operator = 0;
Random ran = new Random();
int i = ran.nextInt(4);
switch(i){
case 0:
operator = '+';
break;
case 1:
operator = '-';
break;
case 2:
operator = '*';
break;
case 3:
operator = '/';
break;
}
return operator;
}
//产生随机运算式
static ScriptEngine js = new ScriptEngineManager().getEngineByName("JavaScript");
public static Map<String,Integer> creatArith(){
Map<String,Integer> map=new HashMap<String, Integer>();
ArrayList<String> arithList = new ArrayList<String>();//运算式
for(int i=0;arithList.size()!=Integer.parseInt(num);i++){
String arr = "";
for(int j=0;j<3;j++){
int number = getNumber();
String operator = String.valueOf(getOperator());
arr += number + operator;
}
arr =arr.substring(0,arr.length()-1);
//将arr转化为数组
char[] arr_str = arr.toCharArray();
String arrString = "";
ArrayList<String> arrslist1 = new ArrayList<String>();
ArrayList<String> arrslist2 = new ArrayList<String>();
ArrayList<String> arrslist = new ArrayList<String>();
//存储运算符
for(int j=0;j<arr_str.length;j++) {
if(arr_str[j]=='+'||arr_str[j]=='-'||arr_str[j]=='*'||arr_str[j]=='/') {
arrString=String.valueOf(arr_str[j]);
arr_str[j]=',';
arrslist1.add(arrString);
}
}
//存储运算数
String s = new String(arr_str);
String[] ss = s.split(",");
for(int k=0;k<ss.length;k++) {
arrslist2.add(ss[k]);
}
//生成运算式
String[] arrs1 = arrslist1.toArray(new String[arrslist1.size()]);//运算符
String[] arrs2 = arrslist2.toArray(new String[arrslist2.size()]);//运算数
for(int m=0;m<arrs1.length;m++){
arrslist.add(arrs2[m]);//运算数
arrslist.add(arrs1[m]);//运算符
}
arrslist.add(arrs2[arrs2.length-1]);
String[] arrs = arrslist.toArray(new String[arrslist2.size()]);//运算式
arr="";//初始化为空
check_arith(arrs);
for(int t=0;t<arrs.length;t++) {
arr+=arrs[t];
}
try {
check_arith_question(arrs,arr);
} catch (ScriptException e) {
e.printStackTrace();
}
arr="";
for(int t=0;t<arrs.length;t++) {
arr+=arrs[t];
}
// 保证生成的运算式子的值在100以内
try {
int result = (int)(js.eval(arr));
if(result >= 0 && result <= 100) {
arithList.add(arr);
}
} catch (ScriptException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//输出运算式
for(String arr: arithList){
try {
int result = (int)(js.eval(arr));
map.put(arr, result);
} catch (ScriptException e) {
e.printStackTrace();
}
}
try {
filewriter(arithList);
} catch (IOException e) {
e.printStackTrace();
}
return map;
}
//判断是否产生负数与小数
public static void check_arith(String arr[]){
for(int i=0;i<arr.length;i++){
//判断是否产生负数
if(arr[i].contains("-")){
if(Integer.valueOf(arr[i-1])<Integer.valueOf(arr[i+1])){
arr[i]="+";
}
}
//判断是否产生小数
if(arr[i].contains("/")){
int a = Integer.valueOf(arr[i-1]);
int b = Integer.valueOf(arr[i+1]);
int x = a%b;
if(x!=0){
arr[i]="+";
}
}
}
}
//判断结果是否产生小数
public static void check_arith_question(String arr[],String arrString) throws ScriptException{
for(int i=0;i<arr.length;i++){
String str = js.eval(arrString).toString();
if(Integer.valueOf(str)<0) {
if(arr[i].contains("-")){
arr[i]="+";
}
}
}
}
//存储运算式
//封装目的地
public static void filewriter(ArrayList<String> arithList) throws IOException {
//封装存储位置
BufferedWriter BufferedWriterbw = new BufferedWriter(new FileWriter("result.txt"));
BufferedWriterbw.newLine();
for(String s : arithList){
//写数据
try {
BufferedWriterbw.write(s+"="+js.eval(s));
} catch (ScriptException e) {
e.printStackTrace();
}
BufferedWriterbw.newLine();
BufferedWriterbw.flush();
}
}
}