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java初学猜数字代码,用java编写简单的猜数字游戏
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用java编写一个猜数字游戏，
package day06;
import java.util.Scanner;
//猜字符游戏
public class GuessingGame {
//主方法
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int count = 0; //猜错的次数
char[] chs = generate(); //随机生成的字符数组
System.out.println(chs); //作弊
while(true){ //自造死循环
System.out.println("猜吧!");
String str = scan.next().toUpperCase(); //获取用户输入的字符串
if(str.equals("EXIT")){ //判断str是否是EXIT
System.out.println("下次再来吧!");
break;
}
char[] input = str.toCharArray(); //将字符串转换为字符数组
int[] result = check(chs,input); //对比
if(result[0]==chs.length){ //位置对为5
int score = chs.length*100 - count*10; //一个字符100分，错一次减10分
System.out.println("恭喜你猜对了，得分:" + score);
break; //猜对时跳出循环
}else{ //没猜对
count++; //猜错次数增1
System.out.println("字符对:"+result[1]+"个，位置对:"+result[0]+"个");
}
}
}
//随机生成5个字符数组
public static char[] generate(){
char[] chs = new char[5];
char[] letters = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
'W', 'X', 'Y', 'Z'};
boolean[] flags = new boolean[letters.length]; //1.
for(int i=0;ichs.length;i++){
int index;
do{
index = (int)(Math.random()*letters.length); //0到25
}while(flags[index]==true); //2.
chs[i] = letters[index];
flags[index] = true; //3.
}
return chs;
}
//对比随机数组与用户输入的数组
public static int[] check(char[] chs,char[] input){
int[] result = new int[2];
for(int i=0;ichs.length;i++){
for(int j=0;jinput.length;j++){
if(chs[i]==input[j]){ //字符对
result[1]++; //字符对个数增1
if(i==j){ //位置对
result[0]++; //位置对个数增1
}
break;
}
}
}
return result;
}
}
相关问答
Q1: 如何用Java语言实现猜数字游戏
java实现的简单猜数字游戏代码,通过随机数与逻辑判断来实现游戏功能 代码如下： import java.util.InputMismatchException; import java.util.Scanner; public class Main { public static void main(String[] args) { // 产生一个随机数 int n
Q2: java猜数字小游戏代码怎么写？
import java.util.Scanner;
public class Guess {
private static final int F = 1;
private static final int T = 100;
public static void main(String[] args) {
int num = (int)(Math.random() * T) + F;
Scanner s = new Scanner(System. in );
// 初始化
int guest = -1;
while (true) {
System.out.print("请输入你猜测的数字(" + F + "-" + T + ")：");
// 每次输入的值，采纳即可
guest = s.nextInt();
if (guest num) {
System.out.println(F + "--" + guest);
} else if (guest num) {
System.out.println(guest + "--" + T);
} else {
System.out.println("中奖了");
break;
}
}
s.close();
}
}
Q3: JAVA猜数字
有一个java.util.Scanner类可以使用
import java.util.Scanner;//我不想打很多，以下用到Scanner的都是java.util.Scanner
public class InputTest{
public static void main(String[] args){
Scanner input=new Scanner(System.in);//输入主要是System.in
System.out.print("请输入一个0～9的数:");
do
{//如果使用者不是输入0～9的数时，我们要他重新输入
int a=input.nextInt();//此时会让执行System.in，再由Scanner转为int形态
if(a0)
{
System.out.print("你输入的值过小，请重新输入:");
continue;//回到回圈一开始
}
else if(a9)
{
System.out.print("你输入的值过大，请重新输入:");
continue;//回到回圈一开始
}
else break;//如果符合就跳出回圈
}while(true);
System.out.println("你输入的值为:"+a);
}
}
希望能帮到你。
Q4: 用JAVA语言编写一个“猜数字游戏”的程序
int num = (int)(Math.random()*100)+1;
Scanner sc = new Scanner(System.in);
int guessNum = -1;
while (guessNum != num) {
System.out.println("请输入1-100之间整数");
guessNum = sc.nextInt();
if (guessNum == num) {
System.out.println("中啦");
} elseif (guessNum num) {
System.out.println("小啦");
} else {
System.out.println("大了");
}
}
扩展资料：
编写思路
1、成1-100之间随机数
(int)(Math.random()*100)+1;
提示用户输入数字，
Scanner sc=new Scanner(System.in);
int guessNum = sc.nextInt();
需要将随机数和用户输入的数字进行比较。
猜一次：
Scanner sc = new Scanner(System.in);
int num = (int)(Math.random()*100)+1;
System.out.println("请输入0-100之间整数");
int guessNum = sc.nextInt();
if (guessNum == num) {
System.out.println("中啦");
} elseif (guessNum num) {
System.out.println("小啦");
} else {
System.out.println("大了");
}
二、使用while循环
publicstaticvoid main(String[] args) {
int num = (int)(Math.random()*100)+1;
Scanner sc = new Scanner(System.in);
while (true) {
System.out.println("请输入1-100之间整数");
int guessNum = sc.nextInt();
if (guessNum == num) {
System.out.println("中啦");
} elseif (guessNum num) {
System.out.println("小啦");
} else {
System.out.println("大了");
}
}
}
三、最后用while() 括号中的条件表达式，当用户猜测的数和系统生成的数字不相等时，就需要继续循环。
Q5: java猜数字游戏代码
import javax.swing.UIManager;
public class MainClass
{
public MainClass()
{
}
public static void main(String args[])
{
try
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception exception) { }
new NumGuessing();
}
}
import java.util.ArrayList;
public class Methods
{
public Methods()
{
}
public static int[] RandomNum()
{
int guessNum[] = new int[4];
ArrayList Temp = new ArrayList();
for (int i = 0; i 4; i++)
guessNum[i] = -1;
for (int i = 0; i 4; i++)
{
do
{
float tempNum = (float)Math.random() * 10F;
if ((double)tempNum = 9.5D)
guessNum[i] = 0;
else
guessNum[i] = Math.round(tempNum);
} while (Temp.contains(Integer.valueOf(guessNum[i])));
Temp.add(Integer.valueOf(guessNum[i]));
}
return guessNum;
}
public static boolean CheckIsFourNum(String enterString)
{
boolean IsFourNum = true;
try
{
Integer.valueOf(enterString);
}
catch (NumberFormatException e)
{
IsFourNum = false;
}
if (enterString.length() != 4)
IsFourNum = false;
return IsFourNum;
}
public static String GetResult(int Num[], String enterString)
{
String resultString = "";
int rightInAll = 0;
int rightOnlyInNum = 0;
for (int i = 0; i 4; i++)
{
if (Num[3 - i] == Integer.valueOf(enterString.substring(i, i + 1)).intValue())
rightInAll++;
for (int j = 0; j 4; j++)
if (Num[i] == Integer.valueOf(enterString.substring(j, j + 1)).intValue())
rightOnlyInNum++;
}
resultString = (new StringBuilder(String.valueOf(rightInAll))).append("A").append(rightOnlyInNum).append("B").toString();
return resultString;
}
public static boolean IsGuessed(String guessString, String guessedStrings[])
{
boolean isGuessed = false;
for (int i = 0; i guessedStrings.length; i++)
if (guessString.equals(guessedStrings[i]))
isGuessed = true;
return isGuessed;
}
public static boolean HasSameNum(String guessString)
{
boolean hasSameNum = false;
for (int i = 0; i guessString.length(); i++)
{
for (int j = 0; j guessString.length(); j++)
{
if (i == j || !guessString.substring(i, i + 1).equals(guessString.substring(j, j + 1)))
continue;
hasSameNum = true;
break;
}
}
return hasSameNum;
}
}
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class NumGuessing
implements ActionListener
{
private JFrame frame;
private JPanel centerJPanel;
private JPanel southJPanel;
private JTextArea showArea;
private JTextField guessField;
private JButton commitJButton;
private Font font;
private boolean isOver;
private int guessTimeCount;
private int guessingNum[];
private String guessedNum[];
public NumGuessing()
{
isOver = false;
guessTimeCount = 0;
guessedNum = new String[10];
frame = new JFrame("NumGuessing");
frame.setSize(200, 300);
frame.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - frame.getSize().width) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - frame.getSize().height) / 2);
font = new Font(null, 2, 15);
centerJPanel = new JPanel();
southJPanel = new JPanel();
showArea = new JTextArea("以下是你猜数字的结果：\n");
showArea.setFont(font);
showArea.setEnabled(false);
guessField = new JTextField(6);
guessField.setFont(font);
commitJButton = new JButton("Enter");
commitJButton.setFont(font);
frame.setLayout(new BorderLayout());
centerJPanel.setLayout(new GridLayout(1, 2));
centerJPanel.add(showArea);
southJPanel.add(guessField);
southJPanel.add(commitJButton);
frame.add(centerJPanel, "Center");
frame.add(southJPanel, "South");
frame.validate();
frame.setResizable(false);
frame.setVisible(true);
frame.setDefaultCloseOperation(3);
commitJButton.addActionListener(this);
guessingNum = Methods.RandomNum();
}
public void actionPerformed(ActionEvent e)
{
String guessString = guessField.getText();
if (!isOver guessTimeCount 10)
{
if (Methods.CheckIsFourNum(guessString))
{
if (!Methods.IsGuessed(guessString, guessedNum))
{
if (!Methods.HasSameNum(guessString))
{
showArea.append((new StringBuilder(String.valueOf(guessString))).append(" ").toString());
showArea.append((new StringBuilder(String.valueOf(Methods.GetResult(guessingNum, guessString)))).append("\n").toString());
guessField.setText(null);
guessedNum[guessTimeCount] = guessString;
guessTimeCount++;
if (Methods.GetResult(guessingNum, guessString).equals("4A4B"))
{
isOver = true;
JOptionPane.showMessageDialog(null, "You Are The Winner");
}
if (guessTimeCount = 10)
{
isOver = true;
JOptionPane.showMessageDialog(null, "你应经猜了十次，输了！");
guessField.setText(null);
}
} else
{
guessField.setText(null);
JOptionPane.showMessageDialog(null, "你输入的数中有相同的数字，请重新填写。");
}
} else
{
guessField.setText(null);
JOptionPane.showMessageDialog(null, "这个数字你已经猜过了！");
}
} else
{
guessField.setText(null);
JOptionPane.showMessageDialog(null, "请输入一个四位数字");
}
} else
{
guessField.setEnabled(false);
}
}
}
