猜数字游戏 - 黑马程序员技术交流社区

import java.util.Scanner;
/**
* Created by mo on 15/11/1.
*
* 需求：猜数字小游戏，猜数范围为1-100，猜数次数上限为5次
* 若猜错，则下次猜数的范围根据本次输入的数据缩小
* 输入超过100或者小于1的，要提示输入错误，同样计入猜数次数
* 最后输出正确答案
*/
public class GuessNumber {
public static void main(String[] args) {
int number = (int)(Math.random()*100)+1; //生成1-100的随机数
int key0 = 1; //定义猜数范围下限
int key1 = 100; //定义猜数范围上限
int count = 0; //定义猜数次数
while (true){
//while循环，因为前四次和第五次的提示不一样，所以内部先判断是前四次还是第五次猜数
if (count < 4){ //若要更改猜数次数上限，将此处改为猜数次数-1
Scanner sc = new Scanner(System.in);
System.out.println("请输入您猜的数字，范围为"+key0+"-"+key1);
int key = sc.nextInt();
count++;
if (key == number){
System.out.println("猜对了！");
break;
}else if(key < 1 || key > 100){
System.out.println("您输入的数据有误，请重试");
}else if(key < number){
if (key > key0){ //根据用户输入的数据判断下限是否需要改变
key0 = key;
}
System.out.println("您猜错了，请继续");
}else {
if (key < key1){ //根据用户输入的数据判断上限是否需要改变
key1 = key;
}
System.out.println("您猜错了，请继续");
}
}else { //第五次猜数
Scanner sc = new Scanner(System.in);
System.out.println("请输入您猜的数字，范围为"+key0+"-"+key1);
int key = sc.nextInt();
if (key == number){
System.out.println("猜对了！");
break;
}else if(key < 1 || key > 100){
System.out.println("您输入的数据有误，超过规定次数，游戏结束");
break;
}else if(key < number){
System.out.println("您猜错了，超过规定次数，游戏结束");
break;
}else {
System.out.println("您猜错了，超过规定次数，游戏结束");
break;
}
}
}
System.out.println("正确答案为："+number);
}
}

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import java.util.Scanner;
class ccc {
public static void main(String[] args) {
int a = 0;
Scanner sc = new Scanner(System.in);
System.out.println("请输入姓名");
String n = sc.nextLine();
System.out.println("请输入一个整数,范围在1-100之间");
int y =(int)(Math.random()*100)+1;
while (true) {
a++;
int x = sc.nextInt();
if (x>y) {
System.out.println("大了");
}else if (x<y) {
System.out.println("小了");
}else {
System.out.println("中了");
break;
}
}
System.out.println(n+"你猜了"+a+"次");
if (a<3) {
System.out.println(n+"你的智商大于120");
}else if (a>3&a<7) {
System.out.println(n+"你的智商一般");
}else {
System.out.println(n+"你的智商低于室温...");
}
}
}

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import java.util.Scanner;
class Test1_guessNum {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in); //创建键盘录入对象.
System.out.println("请从键盘输入你所猜的数,范围在1-100之间: ");
int count = 0;
int num = (int)(Math.random() * 100) + 1;
while (true) {
int guessNum = sc.nextInt();
if (guessNum > 100 || guessNum < 1) {
System.out.println("哥们你是不是不识字,范围在1-100之间!");
return;
}
count ++;
if (guessNum > num) {
System.out.println("大了");
}else if (guessNum < num) {
System.out.println("小了");
}else {
System.out.println("恭喜你,猜中了!");
break;
}
}
if (count > 0 && count <= 3) {
System.out.println("大人真乃神人也!");
}else if (count > 3 && count <= 10) {
System.out.println("大人的智商还有待提高!");
}else {
System.out.println("大人,地球不适合你了,请你回火星吧!");
}
}
}

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import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
public class GuessNum {
private Frame f;
private Label l;
private Button b1;//随机出数
private Button b2;//我猜
private Button b3;//查看以往成绩
private TextField t1;
private int ran = -1; //随机数字
private int num; //猜的数字
private int conut=1; //记录次数
private File file; //文件路径
private Dialog fd;//对话框
private Frame f2;//对话框窗口
private TextArea ta;
private static final GuessNum g = new GuessNum();
public static void main(String[] args){
g.init(); //窗口初始化
g.b1Lstener(); //b1按钮监听事件-随机出数
g.t1KeyListener();//t1监听事件，屏蔽字母和字符，只允许输入数字
g.windowListener();//窗口监听事件-关闭
g.b2Listener();//b2按钮监听事件-我猜
g.b3Listener();
}
public void init(){
f = new Frame("猜数字游戏");
l = new Label("我猜，我猜，我猜猜猜 ");
t1 = new TextField(10);
b1 = new Button("随机出数");
b2 = new Button("我猜");
b3 = new Button("查看以往成绩");
f.setResizable(false);
f.setBounds(600, 300, 300, 100);
f.setLayout(new FlowLayout());
f.add(l);
f.add(b1);
f.add(t1);
f.add(b2);
f.add(b3);
f.setVisible(true);
}
public void b2Listener(){ //b2按钮监听事件-我猜
g.b2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
try{
g.num = Integer.parseInt(g.t1.getText());
if(g.num>g.ran){
if(ran>=0){
g.conut++;
g.l.setText("猜大了");
}
else{
g.l.setText("你还没有点随机");
}
}
else if(g.num<g.ran){
if(ran>=0){
g.conut++;
g.l.setText("猜小了");
}
else{
g.l.setText("你还没有点随机");
}
}
else{
g.l.setText("猜对了");
save();
g.conut = 1;
g.ran = -1;
}
}
catch(NumberFormatException n){
g.l.setText("请输入你要猜的数字");
}
}
});
}
public void b3Listener(){
g.b3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
fd = new Dialog(f2,"成绩排行");
ta = new TextArea(30,22);
fd.setBounds(650, 300, 200, 150);
fd.setLayout(new FlowLayout());
fd.add(ta);
fd.setResizable(false);
file = new File("c:\\temp.txt");
BufferedReader br = null;
int n = 0;
try{
br = new BufferedReader(new FileReader(file));
String value = null;
while((value = br.readLine()) != null){
ta.append("第"+ ++n + ": " + value +"次"+ "\n");
}
}
catch(IOException ee){
}
finally{
try{
if(br!=null)
br.close();
}
catch(IOException es){
}
}
fd.setVisible(true);
fdListener();
}
});
}
public void fdListener(){
fd.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
fd.setVisible(false);
}
});
}
public void windowListener(){ //窗口监听事件-关闭
g.f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
}
public void t1KeyListener(){ //只允许输入数字，屏蔽其他键，比如abc之类的
g.t1.addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent e){
int key = e.getKeyCode();
if(!(key>=KeyEvent.VK_0 && key<=KeyEvent.VK_9 ||
key==KeyEvent.VK_BACK_SPACE ||
key>=KeyEvent.VK_NUMPAD0 && key<=KeyEvent.VK_NUMPAD9))
e.consume();
}
});
}
public void b1Lstener(){ //b1按钮事件监听
g.b1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
g.l.setText("我猜，我猜，我猜猜猜 ");
g.random();
}
});
}
public void save(){//保存成绩
BufferedWriter bw = null;
BufferedReader brr = null;
file = new File("c:\\temp.txt");
ArrayList<Integer> al = new ArrayList<Integer>();
try{
bw = new BufferedWriter(new FileWriter(file,true));
String b = null;
brr = new BufferedReader(new FileReader(file));
bw.write(conut+"");
bw.newLine();
bw.flush();
while((b = brr.readLine())!=null){
al.add(Integer.parseInt(b));
}
Collections.sort(al);
try{
if(bw!=null)bw.close();
if(brr!=null)brr.close();
}
catch(IOException sse){
}
bw = new BufferedWriter(new FileWriter(file));
for(int a = 0;a<al.size();a++){
if(a < 5){
bw.write(al.get(a)+"");
bw.newLine();
}
}
}
catch(IOException e){
}
finally{
try{
if(bw!=null)
bw.close();
if(brr!=null)
brr.close();
}
catch(IOException eee){
}
}
}
public void random(){ //随机
ran = (int)(Math.random()*100)+1;
}
}

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import java.util.Scanner;
class Test1_guessNum {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in); //创建键盘录入对象.
System.out.println("请从键盘输入你所猜的数,范围在1-100之间: ");
int count = 0;
int num = (int)(Math.random() * 100) + 1;
while (true) {
int guessNum = sc.nextInt();
if (guessNum > 100 || guessNum < 1) {
System.out.println("哥们你是不是不识字,范围在1-100之间!");
System.out.println("请从键盘输入你所猜的数,范围在1-100之间: ");
continue;
}
count ++;
if (guessNum > num) {
System.out.println("大了");
}else if (guessNum < num) {
System.out.println("小了");
}else {
System.out.println("恭喜你,猜中了!");
break;
}
}
if (count > 0 && count <= 3) {
System.out.println("大人真乃神人也!");
}else if (count > 3 && count <= 10) {
System.out.println("大人的智商还有待提高!");
}else {
System.out.println("大人,地球不适合你了,请你回火星吧!");
}
}
}

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